Heterotricyclic herbicides

ABSTRACT

Compounds of Formula I, and their N-oxides and agriculturally suitable salts, are disclosed which are useful for controlling undesired vegetation ##STR1## wherein Q, X, A, B, R 1  through R 3 , m, p, q, r, and s are as defined in the disclosure. 
     Also disclosed are compositions containing the compounds of Formula I and a method for controlling undesired vegetation which involves contacting the vegetation or its environment with an effective amount of a compound of Formula I.

This application claims the priority benefit of U.S. Provisional Application 60/039,147, filed Feb. 24, 1997.

BACKGROUND OF THE INVENTION

This invention relates to certain heterotricyclic compounds, their N-oxides, agriculturally suitable salts and compositions, and methods of their use for controlling undesirable vegetation.

The control of undesired vegetation is extremely important in achieving high crop efficiency. Achievement of selective control of the growth of weeds especially in such useful crops as rice, soybean, sugar beet, corn (maize), potato, wheat, barley, tomato and plantation crops, among others, is very desirable. Unchecked weed growth in such useful crops can cause significant reduction in productivity and thereby result in increased costs to the consumer. The control of undesired vegetation in noncrop areas is also important. Many products are commercially available for these purposes, but the need continues for new compounds which are more effective, less costly, less toxic, environmentally safer or have different modes of action.

WO 94/04524 discloses herbicidal cyclohexanedione derivatives of Formula i as herbicides: ##STR2##

wherein, inter alia,

R₁ is C₁ -C₆ alkyl;

R₂ is C₁ -C₄ alkyl;

R₃ -R₅ are H or C₁ -C₄ alkyl; and

n is 0, 1 or 2.

The heterotricyclic compounds of the present invention are not disclosed in this publication.

SUMMARY OF THE INVENTION

This invention is directed to compounds of Formula I including all geometric and stereoisomers, N-oxides, and agriculturally suitable salts thereof, agricultural compositions containing them and their use for controlling undesirable vegetation: ##STR3## wherein

Q is ##STR4## Z is selected from the group --CH₂ CH₂ CH₂ --, --OCH₂ CH₂ --, --O--CH═CH--, --NR¹³ CH₂ CH₂ --, --NR¹³ CH═CH--, --N═CHCH₂ --, --OCH₂ O--, --NR¹³ CH₂ NR¹³ --, --N═CHNR¹³ --, --CH₂ OCH₂ --, --CH₂ NR¹³ CH₂ --, --CH₂ S(O)_(n) CH₂ --, --CH₂ C(O)CH₂ --, --CH═NCH₂ --, --CH₂ CH₂ --, --OCH₂ --, --SCH₂ --, and --NR¹³ CH₂ --, each group optionally substituted with one to four R⁵, and the directionality of the Z linkage is defined such that the moiety depicted on the left side of the linkage is bonded to the carbonyl carbon of Q-1;

X is O, S(O)_(n), N(C₁ -C₂ alkyl), N, CH or CH₂ optionally substituted with 1-2 C₁ -C₂ alkyl;

A is O or S(O)_(n) ;

B is S(O)_(n) ;

each R¹ is independently C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₁ -C₆ alkoxy, C₁ -C₆ haloalkoxy, S(O)_(n) R¹⁷, SO₂ N(R¹³)₂, halogen, cyano or nitro;

each R² is independently C₁ -C₃ alkyl;

each R³ is independently C₁ -C₂ alkyl;

R⁴ is OR¹⁴, SH, S(O)_(n) R¹⁷, halogen or NR¹⁵ R¹⁶ ; or R⁴ is phenylthio or phenylsulfonyl, each optionally substituted with C₁ -C₃ alkyl, halogen, cyano or nitro;

each R⁵ is independently H, C₁ -C₃ alkyl, C₃ -C₆ alkenyl, C₃ -C₆ alkynyl, C₁ -C₃ alkoxy, formyl, C₂ -C₆ alkoxycarbonyl, --CH₂ (C₁ -C₃ alkoxy), --CH(C₁ -C₃ alkoxy)₂, C₁ -C₃ alkylthio, cyano or halogen; or when two R⁵ are attached to the same carbon atom, then said R⁵ pair can be taken together to form --OCH₂ CH₂ O--, --OCH₂ CH₂ CH₂ O--, --SCH₂ CH₂ S--or --SCH₂ CH₂ CH₂ S--, each group optionally substituted with 1-4 CH₃ ;

R⁶ is H, C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₂ -C₆ alkoxyalkyl, formyl, C₂ -C₆ alkylcarbonyl, C₂ -C₆ alkoxycarbonyl, C₂ -C₆ alkylaminocarbonyl, C₃ -C₇ dialkylaminocarbonyl or SO₂ R¹⁷ ; or R⁶ is phenyl, benzyl, benzoyl, --CH₂ C(O)phenyl or phenylsulfonyl, each optionally substituted on the phenyl ring with C₁ -C₃ alkyl, halogen, cyano, or nitro;

R⁷ is H, C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₃ -C₆ alkenyl, C₃ -C₆ alkynyl or --CH₂ CH₂ OR¹³ ; or R⁷ is phenyl or benzyl, each optionally substituted on the phenyl ring with C₁ -C₃ alkyl, halogen, cyano or nitro;

R⁸ is H, C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, halogen, cyano or nitro;

R⁹ is H, C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₃ -C₆ cycloalkyl or C₃ -C₆ halocycloalkyl;

R¹⁰ is H, C₂ -C₆ alkoxycarbonyl, C₂ -C₆ haloalkoxycarbonyl, CO₂ H or cyano;

R¹¹ is C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₃ -C₆ halocycloalkyl or C₃ -C₆ cycloalkyl optionally substituted with 1-4 C₁ -C₃ alkyl;

R¹² is cyano, C₂ -C₆ alkoxycarbonyl, C₂ -C₆ alkylcarbonyl, S(O)_(n) R¹⁶ or C(O)NR¹⁵ R¹⁶ ; each R¹³ is independently H or C₁ -C₆ alkyl;

R¹⁴ is H, C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₂ -C₆ alkoxyalkyl, formyl, C₂ -C₆ alkylcarbonyl, C₂ -C₆ alkoxycarbonyl, C(O)NR¹⁵ R¹⁶ or SO₂ R¹⁷ ; or R¹⁴ is phenyl, benzyl, benzoyl, --CH₂ C(O)phenyl or phenylsulfonyl, each optionally substituted on the phenyl ring with C₁ -C₃ alkyl, halogen, cyano or nitro;

R¹⁵ is H or C₁ -C₆ alkyl;

R¹⁶ is C₁ -C₆ alkyl or C₁ -C₆ alkoxy; or

R¹⁵ and R¹⁶ can be taken together as --CH₂ CH₂ --, --CH₂ CH₂ CH₂ --, --CH₂ CH₂ CH₂ CH₂ --, --CH₂ or --CH₂ CH₂ OCH₂ CH₂ --;

R¹⁷ is C₁ -C₆ alkyl or C₁ -C₆ haloalkyl;

m is 0, 1 or 2;

each n is independently 0, 1 or 2;

p is 0, 1 or 2;

q is 1 or 2;

r is 0, 1,2or 3; and

s is 0, 1,2,3or 4;

provided that when m is 0 then X is other than N or CH; and

wherein the dashed line in Formula I signifies either a single or double bond.

In the above recitations, the term "alkyl", used either alone or in compound words such as "alkylthio" or "haloalkyl" includes straight-chain or branched alkyl, such as, methyl, ethyl, n-propyl, i-propyl, or the different butyl, pentyl or hexyl isomers. The term "1-2 alkyl" indicates that one or two of the available positions for that substituent may be alkyl which are independently selected. "Alkenyl" includes straight-chain or branched alkenes such as ethenyl, 1-propenyl, 2-propenyl, and the different butenyl, pentenyl and hexenyl isomers. "Alkenyl" also includes polyenes such as 1,2-propadienyl and 2,4-hexadienyl. "Alkynyl" includes straight-chain or branched alkynes such as ethynyl, 1-propynyl, 2-propynyl and the different butynyl, pentynyl and hexynyl isomers. "Alkynyl" can also include moieties comprised of multiple triple bonds such as 2,5-hexadiynyl. "Alkoxy" includes, for example, methoxy, ethoxy, n-propyloxy, isopropyloxy and the different butoxy, pentoxy and hexyloxy isomers. "Alkoxyalkyl" denotes alkoxy substitution on alkyl. Examples of "alkoxyalkyl" include CH₃ OCH₂, CH₃ OCH₂ CH₂, CH₃ CH₂ OCH₂, CH₃ CH₂ CH₂ CH₂ OCH₂ and CH₃ CH₂ OCH₂ CH₂. "Alkylthio" includes branched or straight-chain alkylthio moieties such as methylthio, ethylthio, and the different propylthio, butylthio, pentylthio and hexylthio isomers. "Alkylsulfinyl" includes both enantiomers of an alkylsulfinyl group. Examples of "alkylsulfinyl" include CH₃ S(O), CH₃ CH₂ S(O), CH₃ CH₂ CH₂ S(O), (CH₃)₂ CHS(O) and the different butylsulfinyl, pentylsulfinyl and hexylsulfinyl isomers. Examples of "alkylsulfonyl" include CH₃ S(O)₂, CH₃ CH₂ S(O)₂, CH₃ CH₂ CH₂ S(O)₂, (CH₃)₂ CHS(O)₂ and the different butylsulfonyl, pentylsulfonyl and hexylsulfonyl isomers. "Alkylamino", "dialkylamino", "alkenylthio", "alkenylsulfinyl", "alkenylsulfonyl", "alkynylthio", "alkynylsulfinyl", "alkynylsulfonyl", and the like, are defined analogously to the above examples. "Cycloalkyl" includes, for example, cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl.

One skilled in the art will appreciate that not all nitrogen containing heterocycles can form N-oxides since the nitrogen requires an available lone pair for oxidation to the oxide; one skilled in the art will recognize those nitrogen containing heterocycles which can form N-oxides. One skilled in the art will also recognize that tertiary amines can form N-oxides. Synthetic methods for the preparation of N-oxides of heterocycles and tertiary amines are very well known by one skilled in the art including the oxidation of heterocycles and tertiary amines with peroxy acids such as peracetic and m-chloroperbenzoic acid (MCPBA), hydrogen peroxide, alkyl hydroperoxides such as t-butyl hydroperoxide, sodium perborate, and dioxiranes such as dimethyldioxirane. These methods for the preparation of N-oxides have been extensively described and reviewed in the literature, see for example: T. L. Gilchrist in Comprehensive Organic Synthesis, vol. 7, pp 748-750, S. V. Ley, Ed., Pergamon Press; M. Tisler and B. Stanovnik in Comprehensive Heterocyclic Chemistry, vol. 3, pp 18-20, A. J. Boulton and A. McKillop, Eds., Pergamon Press; M. R. Grimmett and B. R. T. Keene in Advances in Heterocyclic Chemistry, vol. 43, pp 149-161, A. R. Katritzky, Ed., Academic Press; M. Tisler and B. Stanovnik in Advances in Heterocyclic Chemistry, vol. 9, pp 285-291, A. R. Katritzky and A. J. Boulton, Eds., Academic Press; and G. W. H. Cheeseman and E. S. G. Werstiuk in Advances in Heterocyclic Chemistry, vol. 22, pp 390-392, A. R. Katritzky and A. J. Boulton, Eds., Academic Press.

The term "halogen", either alone or in compound words such as "haloalkyl", includes fluorine, chlorine, bromine or iodine. The term "1-2 halogen" indicates that one or two of the available positions for that substituent may be halogen which are independently selected. Further, when used in compound words such as "haloalkyl", said alkyl may be partially or fully substituted with halogen atoms which may be the same or different. Examples of "haloalkyl" include F₃ C, ClCH₂, CF₃ CH₂ and CF₃ CCl₂. Examples of "haloalkoxy" include CF₃ O, CCl₃ CH₂ O, HCF₂ CH₂ CH₂ O and CF₃ CH₂ O.

The total number of carbon atoms in a substituent group is indicated by the "C_(i) -C_(j) " prefix where i and j are numbers from 1 to 7. For example, C ₁ -C₃ alkylsulfonyl designates methylsulfonyl through propylsulfonyl; C₂ alkoxyalkyl designates CH₃ OCH₂ ; C₃ alkoxyalkyl designates, for example, CH₃ CH(OCH₃), CH₃ OCH₂ CH₂ or CH₃ CH₂ OCH₂ ; and C₄ alkoxyalkyl designates the various isomers of an alkyl group substituted with an alkoxy group containing a total of four carbon atoms, examples including CH₃ CH₂ CH₂ OCH₂ and CH₃ CH₂ OCH₂ CH₂. Examples of "alkylcarbonyl" include C(O)CH₃, C(O)CH₂ CH₂ CH₃ and C(O)CH(CH₃)₂. Examples of "alkoxycarbonyl" include CH₃ OC(═O), CH₃ CH₂ OC(═O), CH₃ CH₂ CH₂ OC(═O), (CH₃)₂ CHOC(═O) and the different butoxy- or pentoxycarbonyl isomers. In the above recitations, when a compound of Formula I is comprised of one or more heterocyclic rings, all substituents are attached to these rings through any available carbon or nitrogen by replacement of a hydrogen on said carbon or nitrogen.

When a compound is substituted with a substituent bearing a subscript that indicates the number of said substituents can exceed 1, said substituents (when they exceed 1) are independently selected from the group of defined substituents. Further, when the subscript indicates a range, e.g. (R)_(i-j), then the number of substituents may be selected from the integers between i and j inclusive.

When a group contains a substituent which can be hydrogen, for example R⁶ or R⁷, then, when this substituent is taken as hydrogen, it is recognized that this is equivalent to said group being unsubstituted.

Compounds of this invention can exist as one or more stereoisomers. The various stereoisomers include enantiomers, diastereomers, atropisomers and geometric isomers. One skilled in the art will appreciate that one stereoisomer may be more active and/or may exhibit beneficial effects when enriched relative to the other stereoisomer(s) or when separated from the other stereoisomer(s). Additionally, the skilled artisan knows how to separate, enrich, and/or to selectively prepare said stereoisomers. Accordingly, the present invention comprises compounds selected from Formula I, N-oxides and agriculturally suitable salts thereof. The compounds of the invention may be present as a mixture of stereoisomers, individual stereoisomers, or as an optically active form.

Some compounds of this invention can exist as one or more tautomers. One skilled in the art will recognize, for example, that compounds of Formula Ia (Formula I where Q is Q-1, R⁴ is OR¹⁴, and R¹⁴ is H) can also exist as the tautomers of Formulae Ib and Ic as shown below. One skilled in the art will recognize that said tautomers often exist in equilibrium with each other. As these tautomers interconvert under environmental and physiological conditions, they provide the same useful biological effects. The present invention includes mixtures of such tautomers as well as the individual tautomers of compounds of Formula I. ##STR5##

The salts of the compounds of the invention include acid-addition salts with inorganic or organic acids such as hydrobromic, hydrochloric, nitric, phosphoric, sulfuric, acetic, butyric, fumaric, lactic, maleic, malonic, oxalic, propionic, salicylic, tartaric, 4-toluenesulfonic or valeric acids. The salts of the compounds of the invention also include those formed with organic bases (e.g., pyridine, ammonia, or triethylamine) or inorganic bases (e.g., hydrides, hydroxides, or carbonates of sodium, potassium, lithium, calcium, magnesium or barium) when the compound contains an acidic group such as a carboxylic acid or phenol.

Preferred compounds for reasons of better activity and/or ease of synthesis are:

Preferred 1. Compounds of Formula I above, and N-oxides and agriculturally suitable salts thereof, wherein:

Q is Q-1 or Q-2.

Preferred 2. Compounds of Preferred 1 wherein:

X is SO₂ or CH;

A and B are independently S(O)_(n) ; and

R¹ is C₁ -C₃ alkyl, halogen, cyano or nitro.

Preferred 3. Compounds of Preferred 2 wherein:

Q is Q-1;

Z is --CH₂ CH₂ CH₂ --; and

R⁴ is OR¹⁴.

Preferred 4. Compounds of Preferred 2 wherein:

Q is Q-2; and

R⁷ is CH₂ CH₃.

Most preferred is the compound of Preferred 3 selected from the group:

2- (2,3-dihydro-7,10-dimethyl-6,6-dioxido-5H- 1,4-dithiino 2,3-c! 1!benzothiopyran-9-yl)carbonyl!-3-hydroxy-2-cyclohexen-1-one; and

2- (2,3-dihydro-7,10-dimethylnaphtho 1,2-b!-1,4-dithiin-9-yl)carbonyl!-3-hydroxy-2-cyclohexen-1-one.

This invention also relates to herbicidal compositions comprising herbicidally effective amounts of the compounds of the invention and at least one of a surfactant, a solid diluent or a liquid diluent. The preferred compositions of the present invention are those which comprise the above preferred compounds.

This invention also relates to a method for controlling undesired vegetation comprising applying to the locus of the vegetation herbicidally effective amounts of the compounds of the invention (e.g., as a composition described herein). The preferred methods of use are those involving the above preferred compounds.

DETAILS OF THE INVENTION

The compounds of Formula I can be prepared by one or more of the following methods and variations as described in Schemes 1-17. The definitions of Q, R¹ -R¹⁷, Z, X, A, B, m, n, p, q, r, and s in the compounds of Formulae 1-17 below are as defined above in the Summary of the Invention. Compounds of Formulae Ia-Ig are subsets of the compounds of Formula I, and all substituents for Formulae Ia-Ig are as defined above for Formula I. For example, compounds of Formula Id below are compounds of Formula I wherein Q is Q-1. ##STR6##

Scheme 1 illustrates the preparation of compounds of Formula Id whereby an enol ester of Formula 1 is reacted with a base such as triethylamine in the presence of a catalytic amount of a cyanide source (e.g., acetone cyanohydrin or potassium cyanide). This rearrangement is carried out by general methods known in the art; see for example, W. J. Michaely, EP 369,803-Al; D. Cartwright, et al., EP 283,261-B1. ##STR7##

Enol esters of Formula 1 can be prepared by reacting an acid chloride of Formula 2 with a dicarbonyl compound of Formula 3 in the presence of a slight molar excess of a base such as triethylamine in an inert organic solvent such as acetonitrile, dichloromethane or toluene at temperatures between 0° C. and 110° C. (Scheme 2). This type of coupling is carried out by methods known in the art (or by slight modification of these methods): for example, see W. J. Michaely, EP 369,803-A1 and D. Cartwright, et al., EP 283,261-B1. ##STR8##

The acid chlorides of Formula 2 can be prepared by one skilled in the art by reacting acids of Formula 4 with chlorinating agents such as oxalyl chloride or thionyl chloride and a catalytic amount of dimethylformamide (Scheme 3). This chlorination is well known in the art: for example, see W. J. Michaely, EP 369,803-A1. ##STR9##

Enol esters of Formula 1 can be prepared by reacting the acid of Formula 4 with N-methyl-2-chloropyridinium iodide, followed by treatment of the formed intermediate with the dione of Formula 3 in the presence of a base such as triethylamine (Scheme 4). This coupling is carried out by methods known in the art (or by slight modification of these methods): for example, see E. Haslam Tetrahedron (1980), 36,2409-2433. ##STR10##

Compounds of Formula 4 (X is other than CH or N) can be readily prepared by treatment of thioketals of Formula 5 with bromine or an appropriate Lewis acid such as tellurium tetrachloride (Scheme 5). This rearrangement is carried out by methods known in the art (or by slight modification of these methods): for example, see Plumbo, G. et al. Tetrahedron (1991), 47, 4187-4194; Plumbo, G. et al. Synthesis (1991), 223-224; Plumbo G. et al. Tetrahedron (1986), 42,2369-2376; Satoh, J. et al. J. Chem. Amer. Soc., Chem. Commun. (1985), 1645-1646; Tani, H. et al. Chem. Lett. (1990), 1323-1326; Nickon, A. et al. J. Org. Chem. (1985), 50, 4218-4226. ##STR11##

Scheme 6 illustrates the preparation of compounds of Formula 4 (X is CH) whereby a thioketal of Formula 5 (X is CH₂) is treated with 2-3 equivalents of bromine. This rearrangement is carried out by methods known in the art (or by slight modification of these methods): for example, see Plumbo, G. et al. Tetrahedron (1991), 47, 4187-4194; Satoh, J. et al. J. Chem. Amer. Soc., Chem. Commun. (1985), 1645-1646; Tani, H. et al. Chem. Lett. (1990), 1323-1326; Nickon, A. et al. J. Org. Chem. (1985), 50, 4218-4226. ##STR12##

Scheme 7 illustrates the preparation of acids of Formula 5 (n is 0 when X is S(O)_(n)) whereby a phenyl bromide of Formula 6 (n is 0 when X is S(O)_(n)) is treated with n-butyllithium (or magnesium), and the lithium salt (or the Grignard reagent) generated in situ is then reacted with carbon dioxide followed by acidification with an acid such as hydrochloric acid. This conversion is carried out by general methods known in the art; see for example, M. A. Ogliaruso et al., Synthesis of Carboxylic Acids, Esters and Their Derivatives, pp 27-28, John Wiley & Sons; A. J. Bridges, et al., J. Org. Chem. (1990), 55 (2), 773; C. Franke, et al., Angew. Chem. Int. Ed. (1969), 8, 68. In some instances, the incorporation of protection/deprotection sequences or functional group interconversions into the synthesis will aid in obtaining the desired products. The use and choice of the protecting groups will be apparent to one skilled in chemical synthesis (see, for example, Green, T. W.; Wuts, P. G. M., Protective Groups in Organic Synthesis, 2nd ed.; Wiley: New York, 1991). ##STR13##

Scheme 8 illustrates the preparation of phenyl bromides of Formula 6 (n is 0 when X is S(O)_(n)) whereby a ketone of Formula 7 (n is 0 when X is S(O)_(n)) is reacted with HO(CH₂)_(q) SH or HS(CH₂)_(q) SH in the presence of a Lewis acid such as BF₃ etherate in an inert organic solvent such as dichloromethane. This conversion is carried out by general methods known in the art; see for example, T. W. Greene, et al., Protective Groups in Organic Synthesis, John Wiley & Sons, Inc., pp 133-140. ##STR14##

Scheme 9 illustrates the preparation of carboxylic acids of Formula 5 (n is 1 or 2 when X is S(O)_(n)) whereby a ketone of Formula 8 (n is 1 or 2 when X is S(O)_(n)) is reacted with HO(CH₂)_(q) SH or HS(CH₂)_(q) SH in the presence of a Lewis acid such as BF₃ etherate in an inert organic solvent such as dichloromethane. This conversion is carried out by general methods known in the art; see for example, T. W. Greene, et al., Protective Groups in Organic Synthesis, John Wiley & Sons, Inc., pp 133-140. ##STR15##

The ketones of Formula 7 can also be prepared by general methods known in the art (or by slight modification of these methods); see, for example, W. Flemming, et al., Chem. Ber. (1925), 58, 1612; I. W. J. Still, et al., Can. J Chem. (1976), 54, 453-470; V. J. Traynelis, et al., J. Org. Chem. (1961), 26, 2728; I. Nasuno, et al., WO 94/08988; F. Camps, et al., J. Heterocycl. Chem. (1985), 22(5), p. 1421; T. S. Rao, et al., Indian J. Chem. B. (1985), 24(11), p. 1159; S. Ghosh, et al., Tetrahedron (1989), 45(5), p. 1441; A. Danan, et al., Synthesis-Stuttgart (1991), (1I), p. 879; P. Magnus, et al., J. Chem. Soc. Chem. Comm. (1991), (7), p. 544; A. Padwa, et al., J. Org. Chem. (1989), 54(12), p. 2862; S. A. Ali, et al., J. Org. Chem. (1979), 44, p. 4213; J. Blake, et al., J. Am. Chem. Soc. (1966), 88, p. 4061; M. Mori, et al., J. Chem. Soc. Chem. Comm. (1990), (18), p. 1222; S. Kano, et al., J. Chem. Soc., Perkin. Trans. 1 (1980), p. 2105; A. F. Bekhli, et al., Khim Geterotsikl. Soedin. (1975), p. 1118; W. S. Johnson, et al., J. Am. Chem. Soc. (1949), 71, p. 1901; J. A. Hirsch, et al., J. Org. Chem. (1974), 39(14), p. 2044; F. G. Mann, et al., J. Chem. Soc. (1957), p. 4166; A. C. Jain, et al., Indian. J. Chem. B (1987), 26(2), p. 136; G. Ariamala, et al., Tet. Lett. (1988), 29(28), p. 3487; B. Loubinoux, et al., Tet. Lett. (1992), 33(16), p. 2145; S. Cabiddu, et al., J. Organomet. Chem. (1989), 366(1-2), p. 1; R. HasenKamp, et al., Chem. Ber. (1980), 113, p. 1708; D. A. Pulman, et al., J. Chem. Soc. Perkin. Trans. 1 (1973), p. 410; W. C. Lumma, et al., J. Org. Chem. (1969), 34, p. 1566; P. D. Clark, et al., Can. J. Chem. (1982), 60(3), p. 243.

The dicarbonyl compounds of Formula 3 are either commercially available or can be prepared by general methods known in the art (or by slight modification of these methods): for example, see D. Cartwright, et al., EP 0283261-B 1; J. Dangelo, et al., Tet. Lett. (1991), 32(26), p. 3063; T. Okado, et al., J. Org. Chem. (1977), 42, p. 1163; B. E. Maryanoff, et al., J. Am. Chem Soc. (1975), 97, p. 2718; E. Er, et al., Helv. Chim. Acta. (1992), 75(7), p. 2265; Y. D. Vankar, et al., Tet. Lett., (1987), 28(5), p. 551; C. S. Pak, et al., Tet. Lett. (1991), 32(42), p. 6011; I. Nishiguchi, et al., Chem. Lett. (1981), p. 551; B. Eistert, et al., Liebigs Ann. Chem. (1962), 659, p. 64; N. K. Hamer, Tet. Lett. (1986), 27(19), p. 2167; M. Sato, et al., Heterocycles (1987), 26(10), p. 2611; A. Murray, et al., Tet. Lett. (1995), 36(2), p. 291; K. S. Kochhar, et al., Tet. Lett. (1984), 25(18), p. 1871; M. Sato, et al., Tetrahedron (1991), 47(30), p. 5689; M. Sato, et al., Chem. Pharm. Bull. (1990), 38(1), p. 94; T. Meal, U.S. Pat. No. 4,931,570; T. Muel, et al., U.S. Pat. No. 5,093,503.

Compounds of General Formula le can be readily prepared by one skilled in the art by using the reactions and techniques described in Schemes 10-12 of this section. ##STR16##

Scheme 10 illustrates the preparation of compounds of Formula Ie (R⁶ ═H). whereby an ester of Formula 9 or its isomer 9a is reacted with a base such as triethylamine in the presence of a catalytic amount of cyanide source (e.g., acetone cyanohydrin or potassium cyanide). This rearrangement is carried out by methods known in the art (or by slight modification of these methods): for example, see W. J. Michaely, EP 369,803. ##STR17##

Compounds of Formula 9 or 9a can be prepared by reacting the acid of Formula 4 with N-methyl-2-chloropyridinium iodide, followed by treatment of the formed intermediate with the hydroxypyrazole of Formula 10 in the presence of a base such as triethylamine (Scheme 11). This coupling is carried out by methods known in the art (or by slight modification of these methods): for example, see E. Haslam Tetrahedron (1980), 36, 2409-2433. ##STR18##

Esters of Formula 9 or amides of Formula 9a can also be prepared by reacting a hydroxypyrazole of Formula 10 with an acid chloride of Formula 2 in the presence of a slight mole excess of a base such as triethylamine in an inert organic solvent such as acetonitrile, methylene chloride or toluene at temperatures between 0° C. and 110° C. (Scheme 12). This type of coupling is carried out by methods known in the art (or by slight modification of these methods): for example, see W. J. Michaely, EP 369,803. ##STR19##

Compounds of General Formula If can be readily prepared by one skilled in the art by using the reactions and techniques described in Schemes 13-16 of this section. ##STR20##

Scheme 13 illustrates the preparation of compounds of Formula If whereby a compound of Formula 11 is reacted with a salt of hydroxylamine such as hydroxylamine hydrochloride in the presence of a base or acid acceptor such as triethylamine or sodium acetate. The substituents of the immediate products may be further modified if appropriate. This cyclization is carried out by methods known in the art (or by slight modification of these methods): for example, see P. A. Cain, et al., EP 560,483; C. J. Pearson, et al., EP 636,622. ##STR21##

wherein

L is a leaving group such as C₁ -C₄ alkoxy (e.g., OC₂ H₅) or N,N-dialkylamino (e.g., dimethyl amino) R^(10a) is H, C₂ -C₆ alkoxycarbonyl, C₂ -C₆ haloalkoxycarbonyl or CONH₂

Scheme 14 illustrates the preparation of compounds of Formula 11 whereby a compound of Formula 12 is reacted with a reagent of Formula 13 or Formula 14. This conversion is carried out by methods known in the art (or by slight modification of these methods): for example, see P. A. Cain, et al., EP 560,483; C. J. Pearson, et al., EP 636,622. ##STR22##

Scheme 15 illustrates the preparation of compounds of Formula 12 whereby an ester of Formula 15 is decarboxylated in the presence of a catalyst, such as p-toluenesulfonic acid, in an inert solvent such as toluene. This conversion is carried out by methods known in the art (or by slight modification of these methods): for example, see P. A. Cain, et al., EP 560,483; C. J. Pearson, et al., EP 636,622. ##STR23##

Esters of Formula 15 can be prepared by reacting the metal salt of a compound of Formula 16 with an acid chloride of Formula 2 (Scheme 16). This type of coupling is known in the art: for example see P. A. Cain, et al., EP 560,483; C. J. Pearson, et al., EP 636,622. ##STR24##

Scheme 17 illustrates the preparation of compounds of Formula Ig whereby a compound of Formula 2 is reacted with a compound of Formula 17 in the presence of a base such as triethylamine, potassium carbonate, sodium hydride or Mg(OEt)₂ in an inert organic solvent such as diethyl ether, tetrahydrofuran, N,N-dimethylformamide, dichloromethane or acetonitrile. ##STR25##

This conversion is carried out by methods known in the art (or slight modification of these methods); for example, see J. W. Ashmore, EP 213,892 and P. A. Cain, EP 496,631 A1. ##STR26##

It is recognized that some reagents and reaction conditions described above for preparing compounds of Formula I may not be compatible with certain functionalities present in the intermediates. In these instances, the incorporation of protection/deprotection sequences or functional group interconversions into the synthesis will aid in obtaining the desired products. The use and choice of the protecting groups will be apparent to one skilled in chemical synthesis (see, for example, Greene, T. W.; Wuts, P. G. M. Protective Groups in Organic Synthesis, 2nd ed.; Wiley: New York, 1991). One skilled in the art will recognize that, in some cases, after the introduction of a given reagent as it is depicted in any individual scheme, it may be necessary to perform additional routine synthetic steps not described in detail to complete the synthesis of compounds of Formula I. One skilled in the art will also recognize that it may be necessary to perform a combination of the steps illustrated in the above schemes in an order other than that implied by the particular sequence presented to prepare the compounds of Formula I.

One skilled in the art will also recognize that compounds of Formula I and the intermediates described herein can be subjected to various electrophilic, nucleophilic, radical, organometallic, oxidation, and reduction reactions to add substituents or modify existing substituents.

Without further elaboration, it is believed that one skilled in the art using the preceding description can utilize the present invention to its fullest extent. The following Examples are, therefore, to be construed as merely illustrative, and not limiting of the disclosure in any way whatsoever. Percentages are by weight except for chromatographic solvent mixtures or where otherwise indicated. Parts and percentages for chromatographic solvent mixtures are by volume unless otherwise indicated. ¹ H NMR spectra are reported in ppm downfield from tetramethylsilane; s=singlet, d=doublet, t=triplet, q=quartet, m=multiplet, dd=doublet of doublets, dt=doublet of triplets, br s=broad singlet.

EXAMPLE 1

Step A: Preparation of 2,3-dihydro-7,10-dimethyl-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-carboxylic acid

A mixture of 0.62 g of 2,3-dihydro-5,8-dimethylspiro 4H-1-benzothiopyran-4,2'- 1,3!dithiolane!-6-carboxylic acid in 200 mL of chloroform was cooled to 0° C. To this mixture was added a solution of 0.38 g of bromine in 20 mL of chloroform dropwise. The resulting mixture was stirred overnight at room temperature. To this reaction mixture was added 10% aqueous sodium thiosulfate. The organic layer was separated and dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. The resulting residue was crystallized from 1-chlorobutane to gave 0.29 g of the title compound of Step A as a purple solid melting at 250° C. (dec.). ¹ H NMR (CDCl₃): δ 2.35 (s, 3H), 2.70 (s, 3H), 3.05 (m, 2H), 3.39 (br s, 2H), 3.41 (m, 2H), 7.66 (s, 1H).

Step B: Preparation of 3-oxo-1-cyclohexen-1-yl 2,3-dihydro-7,10-dimethyl-5H- 1,4-dithiino 2,3-c! 1!benzothiopyran-9-carboxylate

To a mixture of 0.78 g of the title compound of Step A in 35 mL of methylene chloride was added 0.66 mL of oxalyl chloride (purchased from Aldrich Chemical Co.) and 2 drops of N,N-dimethylformamide. The mixture was refluxed for 2 h and was then concentrated under reduced pressure to dryness. The resulting residue was redissolved in 30 mL of methylene chloride and the solution was evaporated to dryness again. Another 30 mL of methylene chloride was added to the residue and the solution was cooled to about 0° C. To this solution was added 0.31 g of 1,3-cyclohexanedione (purchased from Aldrich Chemical Co.) followed by addition of 1.0 mL of triethylamine. The mixture was stirred overnight while warming to room temperature. Saturated aqueous sodium bicarbonate was then added to the reaction mixture and the mixture was extracted with methylene chloride. The combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. Chromatography of the crude product on silica gel eluting with a mixture of hexanes:ethyl acetate (8:1 and then 4:1) yielded 0.58 g of the title compound of Step B as a yellow solid melting at 120°-126° C. ¹ H NMR (CDCl₃): δ 2.15 (m, 2H), 2.36 (s, 3H), 2.46 (t, 2H), 2.66 (t, 2H), 2.67 (s, 3H), 3.07 (m, 2H), 3.24 (br s, 2H), 3.41 (m, 2H), 6.00 (s, 1H), 7.60 (s, 1H).

Step C: Preparation of 2- (2,3-dihydro-7,10-dimethyl-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-yl)carbonyl!-1,3-cyclohexanedione

To a mixture of 0.55 g of the title compound of Step B in 25 mL of anhydrous acetonitrile and 5 mL of methylene chloride was added 0.34 mL of triethylamine, 2 drops of acetone cyanohydrin (purchased from Aldrich Chemical Co.), and 5 mg of potassium cyanide. The mixture was allowed to stir at room temperature overnight. An additional 5 mg of potassium cyanide was added and the reaction mixture was stirred at 50° C. for 48 h. The mixture was concentrated under reduced pressure to dryness and to the resulting residue was added dilute hydrochloric acid of pH 1. The mixture was extracted with ethyl acetate, and the combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to afford 0.36 g of the title compound of Step C, a compound of this invention, as a brown solid melting at 95° C. (dec.). ¹ H NMR (CDCl₃): δ 2.06 (m, 2H), 2.30 (s, 3H), 2.34 (s, 3H), 2.30-2.90 (m, 4H), 3.05 (m, 2H), 3.22 (br s, 2H), 3.39 (m, 2H), 6.70 (s, 1H).

EXAMPLE 2

Step A: Preparation of 2,3-dihydro-5,8-dimethylspiro 4H-1-benzothiopyran4,2'- 1,3!dithiolane!-6-carboxylic acid 1,1-dioxide

To a mixture of 0.60 g of 3,4-dihydro-5,8-dimethyl4-oxo-2H-1-benzothiopyran-6-carboxylic acid 1,1-dioxide in 30 mL of methylene chloride was added 0.24 mL of 1,2-ethanedithiol (purchased from Aldrich Chemical Co.) and 0.35 mL of boron trifluoride diethyl etherate (purchased from Janssen Chimica). The mixture was refluxed overnight and then concentrated under reduced pressure to dryness. To the resulting residue was added 10 mL of dilute hydrochloric acid of pH 1. The mixture was extracted with ethyl acetate, and the combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to afford 0.62 g of the title compound of Step A as an orange solid which had a melting point >250° C. ¹ H NMR ((CD₃)₂ SO): δ 2.65 (s, 3H), 2.77 (s, 3H), 2.94 (m, 2H), 3.55-3.80 (m, 6H), 7.50 (s, 1H).

Step B: Preparation of 2,3-dihydro-7,10-dimethyl-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-carboxylic acid 6,6-dioxide

A mixture of 0.50 g of the title compound of Step A in 200 mL of chloroform was cooled to 0° C. To this mixture was added a solution of 0.45 g of bromine in 35 mL of chloroform dropwise. The mixture was stirred at room temperature for 2 h and then 10% aqueous sodium thiosulfate solution was added. The organic layer was separated and dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. The resulting residue was crystallized from 1-chlorobutane to yield 0.41 g of the title compound of Step B as a solid melting at 145° C. (dec.). ¹ H NMR (CDCl₃): δ 2.49 (s, 3H), 2.56 (s, 3H), 3.11 (br s, 2H), 3.48 (m, 2H), 4.24 (br s, 2H), 7.57 (s, 1H).

Step C: Preparation of 2,3-dihydro-7,10-dimethyl-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-carbonyl chloride 6,6-dioxide

To a mixture of 0.40 g of the title compound of Step B in 15 mL of methylene chloride was added 0.31 mL of oxalyl chloride (purchased from Aldrich Chemical Co.) and 2 drops of N,N-dimethylformamide. The mixture was refluxed for 2 h and was then concentrated under reduced pressure to dryness. To the resulting residue was added 20 mL of methylene chloride and this solution was evaporated to dryness again. Another 20 mL of methylene chloride was added to the residue to provide the title compound of Step C as a methylene chloride solution. This solution was divided into two equal portions and was used as a starting material for both step D in Example 2 and step A in Example 4.

Step D: Preparation of 3-oxo-1-cyclohexen-1-yl 2,3-dihydro-7,10-dimethyl-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-carboxylate 6,6-dioxide

A solution of the title compound of Step C in 10 mL of methylene chloride was cooled to 0° C. To this solution was added 0.07 g of 1,3-cyclohexanedione (purchased from Aldrich Chemical Co.) followed by addition of 0.24 mL of triethylamine. The mixture was stirred overnight at room temperature, and then saturated aqueous sodium bicarbonate solution was added. The mixture was extracted with methylene chloride, and the combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. Chromatography of the crude product on silica gel eluting with a mixture of hexanes:ethyl acetate (5:1 and then 2:1) yielded 0.14 g of the title compound of Step D as a semi-solid. ¹ H NMR (CDCl₃): δ 2.15 (m, 2H), 2.49 (t, 2H), 2.62 (s, 3H), 2.69 (m, 2H), 2.72 (s, 3H), 3.11 (m, 2H), 3.52 (m, 2H), 3.85 (s, 2H), 6.02 (s, 1H), 7.68 (s, 1H).

Step E: Preparation of 2- (2,3-dihydro-7,10-dimethyl-6,6-dioxido-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-yl)carbonyl!-1,3-cyclohexanedione

To a mixture of 0.14 g of the title compound of Step D in 10 mL of anhydrous acetonitrile was added 0.08 mL of triethylamine, 2 drops of acetone cyanohydrin (purchased from Aldrich Chemical Co.), and 5 mg of potassium cyanide. The mixture was allowed to stir at room temperature overnight. The mixture was concentrated under reduced pressure to dryness. To the resulting residue was added water and the mixture was acidified to pH 2 with concentrated hydrochloric acid and extracted with ethyl acetate. The combined organic extracts were dried over MgSO₄, filtered, and concentrate under reduced pressure to afford 0.12 g of the title compound of Step E, a compound of this invention, as a solid melting at 208°-213° C. ¹ H NMR (CDCl₃): δ 2.05 (m, 2H), 2.28 (s, 3H), 2.45 (m, 2H), 2.64 (s, 3H), 2.79 (m, 2H), 3.11 (m, 2 H), 3.50 (m, 2H), 3.85 (s, 2H), 6.82 (s, 1H).

EXAMPLE 3

Step A: Preparation of 7-bromo-5,8-dimethyltetralone

To a solution of 15.0 g of 5,8-dimethyltetralone (purchased from Wiley Organics) in 250 mL of methylene chloride was added 28.7 g of aluminum chloride (purchased from Aldrich Chemical Co.). The mixture was cooled to 0° C. and then a solution of 15.2 g bromine in 90 mL of methylene chloride was added dropwise. After the mixture was stirred at room temperature for 2 h, it was cooled to 0° C. and then approximately 200 g of ice was added. The resulting mixture was filtered. The organic layer was separated and was washed with 1N aqueous sodium hydroxide, dried over MgSO₄, filtered, and concentrated under reduced pressure. The resulting solid was crystallized from 1-chlorobutane to give 21.8 g of the title compound of Step A as a solid melting at 64°-68° C. ¹ H NMR (CDCl₃): δ 2.11 (m, 2H), 2.25 (s, 3H), 2.64 (t, 2H), 2.66 (s, 3H), 2.77 (t, 2H), 7.53 (s, 1H).

Step B: Preparation of 7'-bromo-3',4'-dihydro-5',8'-dimethlspiro 1,3-dithiolane-2,1'(2'H)-naphthalene!

To a mixture of 20.0 g of the title compound of Step A in 500 mL of methylene chloride was added 11.2 mL of 1,2-ethanedithiol (purchased from Aldrich Chemical Co.) and 17.0 mL of boron trifluoride diethyl etherate (purchased from Janssen Chimica). The mixture was stirred at room temperature for 3 h. To this reaction mixture was added 15% aqueous sodium hydroxide and the resulting mixture was extracted with methylene chloride. The combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to afford 20.2 g of the title compound of Step B as a white solid melting at 164°-165° C. ¹ H NMR (CDCl₃): δ 1.98 (m, 2H), 2.15 (s, 3H), 2.38 (m, 2H), 2.58 (t, 2H), 2.78 (s, 3H), 3.40-3.60 (m, 4H), 7.35 (s, 1H).

Step C: Preparation of 3',4'-dihydro-5',8'-dimethylspiro 1,3-dithiolane-2,1'(2'H)-naphthalene!-7'-carboxylic acid

A solution of 12.7 g of the title compound of Step B in 300 mL of tetrahydrofuran under a nitrogen atmosphere was cooled to -78° C. To this solution was slowly added 19.2 mL of a 2.5M solution of n-butyllithium in hexane (purchased from Aldrich Chemical Co.). The reaction mixture was maintained below -60° C. during the addition of n-butyllithium and stirring 30 min after addition was complete. The mixture was then cooled to -78° C. and 35.0 g of crushed dry ice was added. The resulting mixture was stirred and allowed to warm to room over 1.5 h. The mixture was then concentrated under reduced pressure, and to the resulting residue was added 300 mL of water. The mixture was then cooled to 0° C., acidified to pH 2 with concentrated hydrochloric acid, and extracted with ethyl acetate. The combined organic layers were dried over MgSO₄, filtered, and concentrated under reduced pressure. The resulting solid was crystallized from 1-chlorobutane to gave 3.2 g of the title compound of Step C as a white solid melting at 215° C. (dec.). ¹ H NMR ((CD₃)₂ SO): δ 1.90 (m, 2H), 2.16 (s, 3H), 2.34 (m, 2H), 2.61 (t, 2H), 2.75 (s, 3H), 3.40-3.70 (m, 4H), 7.29 (s, 1H), 12.75 (br s, 1 H).

Step D: Preparation of 2,3-dihydro-7,10-dimethylnaphtho 1,2-b!-1,4-dithiin-9-carboxylic acid

To a mixture of 1.2 g of the title compound of Step C in 150 mL of chloroform was added a solution of 0.76 g of bromine in 30 mL of chloroform dropwise. The mixture was stirred overnight at room temperature. To this reaction mixture was then added 10% aqueous sodium thiosulfate. The organic layer was separated, dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. The resulting solid was crystallized from 1-chlorobutane to gave 0.65 g of the title compound of Step D as a yellow solid melting at 205° C. (dec.). ¹ H NMR ((CD₃)₂ SO): δ 2.58 (s, 3H), 2.91 (s, 3H), 2.98 (m, 2H), 3.49 (m, 2H), 7.47 (d, 1H), 7.49 (s, 1H), 7.73 (d, 1H).

Step E: Preparation of 3-oxo-1-cyclohexen-1-yl 2,3-dihydro-7,10-dimethylnaphtho 1,2-b!-1,4-dithiin-9-carboxylate

To a mixture of 0.40 g of the title compound of Step D in 25 mL of tetrahydrofuran was added 0.34 mL of oxalyl chloride (purchased from Aldrich Chemical Co.) and 2 drops of N,N-dimethylformamide. The mixture was refluxed for 2 h and was then concentrated under reduced pressure to dryness. To the resulting residue was added 25 mL of tetrahydrofuran and evaporated to dryness again. Another 25 mL of tetrahydrofuran was added to the residue and the solution was cooled to about 0° C. To this mixture was added 0.16 g of 1,3-cyclohexanedione (purchased from Aldrich Chemical Co.) followed by addition of 0.52 mL of triethylamine. The mixture was stirred overnight at room temperature. To the reaction mixture was added saturated aqueous sodium bicarbonate and the mixture was extracted with methylene chloride. The combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. Chromatography of the crude product on silica gel eluting with a mixture of hexanes:ethyl acetate (8:1 and then 4:1) yielded 0.21 g of the title compound of Step E as a yellow solid melting at 126°-130° C. ¹ H NMR (CDCl₃): δ 2.18 (m, 2H), 2.49 (t, 2H), 2.64 (s, 3H), 2.72 (t, 2H), 2.90 (t, 2H), 3.06 (s, 3H), 3.52 (t, 2H), 6.07 (s, 1H), 7.50 (d, 1H), 7.62 (s, 1H), 7.70 (d, 1H).

Step F: Preparation of 2- (2,3-dihydro-7,10-dimethylnaphtho 1,2-b!-1,4-dithiin-9-yl)carbonyl!-1,3-cyclohexanedione

To a mixture of 0.20 g of the title compound of Step E in 20 mL of anhydrous acetonitrile was added 0.14 mL of triethylamine, 2 drops of acetone cyanohydrin (purchased from Aldrich Chemical Co.), and 5 mg of potassium cyanide. The mixture was refluxed overnight and then concentrated under reduced pressure to dryness. To the resulting residue was added dilute hydrochloric acid of pH 1 and the mixture was extracted with ethyl acetate. The combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure. The resulting solid was crystallized from 1-chlorobutane to gave 0.16 g of the title compound of Step F, a compound of this invention, as a semi-solid. ¹ H NMR (CDCl₃): δ 2.05 (m, 2H), 2.44 (m, 2H), 2.59 (s, 3H), 2.84 (s, 3H), 2.75-3.00 (m, 4H), 3.47 (t, 2H), 6.93 (s, 1H), 7.44 (d, 1H), 7.68 (d, 1H).

EXAMPLE 4

Step A: Preparation of 1-ethyl-1H-pyrazol-5-yl 2,3-dihydro-7,10-dimethyl-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-carboxylate 6,6-dioxide

A solution of the title compound of Step C of Example 2 in 10 mL of methylene chloride was cooled to 0° C. To this solution was added 0.22 g of 1-ethyl-1H-pyrazol-5-ol followed by addition of 0.24 mL of triethylamine. The mixture was stirred overnight while warming to room temperature. To the reaction mixture was added saturated aqueous sodium bicarbonate. The mixture was extracted with methylene chloride, and the combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to dryness. Chromatography of the crude product on silica gel eluting with a mixture of hexanes : ethyl acetate (5:1 and then 2:1) yielded 0.04 g of the title compound of Step A as a semi-solid. ¹ H NMR (CDCl₃): δ 1.45 (t, 3H), 2.67 (s, 3H), 2.75 (s, 3H), 3.14 (m, 2H), 3.54 (m, 2H), 3.89 (s, 2H), 4.12 (m, 2H), 6.22 (s, 1H), 7.49 (s, 1 H), 7.81 (s, 1H).

Step B: Preparation of (2,3-dihydro-7,10-dimethyl-6,.6-dioxido-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-yl)(1-ethyl-5-hydroxy- 1H-pyrazol-4-yl)methanone

To a mixture of 0.04 g of the title compound of Step A in 5 mL of anhydrous acetonitrile was added 0.02 mL of triethylamine, 2 drops of acetone cyanohydrin (purchased from Aldrich Chemical Co.), and 5 mg of potassium cyanide. The mixture was allowed to stir at room temperature overnight. The mixture was then concentrated under reduced pressure to dryness and water was added to the resulting residue. The mixture was acidified to pH 2 with concentrated hydrochloric acid. The mixture was then extracted with ethyl acetate and the combined organic extracts were dried over MgSO₄, filtered, and concentrated under reduced pressure to afford 0.04 g of the title compound of Step B, a compound of this invention, as a solid melting at 210°-216° C. ¹ H NMR (CDCl₃): δ 1.46 (t, 3H), 2.44 (s, 3H), 2.70 (s, 3H), 3.11 (m, 2H), 3.53 (m, 2H), 3.86 (s, 2H), 4.07 (m, 2H), 7.20 (s, 1H), 7.35 (s, 1H).

By the procedures described herein together with methods known in the art, the following compounds of Tables 1 to 8 can be prepared.

                  TABLE 1     ______________________________________      ##STR27##     R.sup.5a           R.sup.5b                  R.sup.4       R.sup.1a                                     R.sup.1b                                           A    B     ______________________________________     wherein X is CH.sub.2     H     H      OH            H    H     O    S     H     CH.sub.3                  OH            H    H     O    S     CH.sub.3           CH.sub.3                  OH            H    H     O    S     H     H      OH            CH.sub.3                                     H     O    S     H     CH.sub.3                  OH            CH.sub.3                                     H     O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     H     H      OH            CH.sub.3                                     Cl    O    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     H     H      OH            Cl   H     O    S     H     CH.sub.3                  OH            Cl   H     O    S     CH.sub.3           CH.sub.3                  OH            Cl   H     O    S     H     H      OH            Cl   CH.sub.3                                           O    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     H     H      OH            H    H     O    SO.sub.2     H     CH.sub.3                  OH            H    H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     O    SO.sub.2     H     H      OH            CH.sub.3                                     H     O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OH            CH.sub.3                                     Cl    O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     H     H      OH            Cl   H     O    SO.sub.2     H     CH.sub.3                  OH            Cl   H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     O    SO.sub.2     H     H      OH            Cl   CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     H     H      OH            H    H     S    S     H     CH.sub.3                  OH            H    H     S    S     CH.sub.3           CH.sub.3                  OH            H    H     S    S     H     H      OH            CH.sub.3                                     H     S    S     H     CH.sub.3                  OH            CH.sub.3                                     H     S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     S    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     H     H      OH            CH.sub.3                                     Cl    S    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     H     H      OH            Cl   H     S    S     H     CH.sub.3                  OH            Cl   H     S    S     CH.sub.3           CH.sub.3                  OH            Cl   H     S    S     H     H      OH            Cl   CH.sub.3                                           S    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     H     H      OH            H    H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     H      OH            Cl   H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     H     H      OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     ______________________________________     wherein X is SO.sub.2     H     H      OH            H    H     O    S     H     H      OH            H    H     O    S     H     CH.sub.3                  OH            H    H     O    S     CH.sub.3           CH.sub.3                  OH            H    H     O    S     H     H      OH            CH.sub.3                                     H     O    S     H     CH.sub.3                  OH            CH.sub.3                                     H     O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     H     H      OH            CH.sub.3                                     Cl    O    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     H     H      OH            Cl   H     O    S     H     CH.sub.3                  OH            Cl   H     O    S     CH.sub.3           CH.sub.3                  OH            Cl   H     O    S     H     H      OH            Cl   CH.sub.3                                           O    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     H     H      OH            H    H     O    SO.sub.2     H     CH.sub.3                  OH            H    H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     O    SO.sub.2     H     H      OH            CH.sub.3                                     H     O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OH            CH.sub.3                                     Cl    O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     H     H      OH            Cl   H     O    SO.sub.2     H     CH.sub.3                  OH            Cl   H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     O    SO.sub.2     H     H      OH            Cl   CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     H     H      OH            H    H     S    S     H     CH.sub.3                  OH            H    H     S    S     CH.sub.3           CH.sub.3                  OH            H    H     S    S     H     H      OH            CH.sub.3                                     H     S    S     H     CH.sub.3                  OH            CH.sub.3                                     H     S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     S    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     H     H      OH            CH.sub.3                                     Cl    S    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     H     H      OH            Cl   H     S    S     H     CH.sub.3                  OH            Cl   H     S    S     CH.sub.3           CH.sub.3                  OH            Cl   H     S    S     H     H      OH            Cl   CH.sub.3                                           S    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     H     H      OH            H    H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     H      OH            Cl   H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     H     H      OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     ______________________________________

                  TABLE 2     ______________________________________      ##STR28##     R.sup.5a           R.sup.5b                  R.sup.4       R.sup.1a                                     R.sup.1b                                           A    B     ______________________________________     wherein X is CH     H     H      OH            H    H     O    S     H     CH.sub.3                  OH            H    H     O    S     CH.sub.3           CH.sub.3                  OH            H    H     O    S     H     H      OH            CH.sub.3                                     H     O    S     H     CH.sub.3                  OH            CH.sub.3                                     H     O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     H     H      OH            CH.sub.3                                     Cl    O    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     H     H      OH            Cl   H     O    S     H     CH.sub.3                  OH            Cl   H     O    S     CH.sub.3           CH.sub.3                  OH            Cl   H     O    S     H     H      OH            Cl   CH.sub.3                                           O    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     H     H      OH            H    H     O    SO.sub.2     H     CH.sub.3                  OH            H    H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     O    SO.sub.2     H     H      OH            CH.sub.3                                     H     O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OH            CH.sub.3                                     Cl    O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     H     H      OH            Cl   H     O    SO.sub.2     H     CH.sub.3                  OH            Cl   H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     O    SO.sub.2     H     H      OH            Cl   CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     H     H      OH            H    H     S    S     H     CH.sub.3                  OH            H    H     S    S     CH.sub.3           CH.sub.3                  OH            H    H     S    S     H     H      OH            CH.sub.3                                     H     S    S     H     CH.sub.3                  OH            CH.sub.3                                     H     S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     S    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     H     H      OH            CH.sub.3                                     Cl    S    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     H     H      OH            Cl   H     S    S     H     CH.sub.3                  OH            Cl   H     S    S     CH.sub.3           CH.sub.3                  OH            Cl   H     S    S     H     H      OH            Cl   CH.sub.3                                           S    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     H     H      OH            H    H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     H      OH            Cl   H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     H     H      OH            CI   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     ______________________________________     wherein X is N     H     H      OH            H    H     O    S     H     CH.sub.3                  OH            H    H     O    S     CH.sub.3           CH.sub.3                  OH            H    H     O    S     H     H      OH            CH.sub.3                                     H     O    S     H     CH.sub.3                  OH            CH.sub.3                                     H     O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    S     H     H      OH            CH.sub.3                                     Cl    O    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    S     H     H      OH            Cl   H     O    S     H     CH.sub.3                  OH            Cl   H     O    S     CH.sub.3           CH.sub.3                  OH            Cl   H     O    S     H     H      OH            Cl   CH.sub.3                                           O    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    S     H     H      OH            H    H     O    SO.sub.2     H     CH.sub.3                  OH            H    H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     O    SO.sub.2     H     H      OH            CH.sub.3                                     H     O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     O    SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OH            CH.sub.3                                     Cl    O    SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    O    SO.sub.2     H     H      OH            Cl   H     O    SO.sub.2     H     CH.sub.3                  OH            Cl   H     O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     O    SO.sub.2     H     H      OH            Cl   CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           O    SO.sub.2     H     H      OH            H    H     S    S     H     CH.sub.3                  OH            H    H     S    S     CH.sub.3           CH.sub.3                  OH            H    H     S    S     H     H      OH            CH.sub.3                                     H     S    S     H     CH.sub.3                  OH            CH.sub.3                                     H     S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     S    S     H     H      OH            CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           S    S     H     H      OH            CH.sub.3                                     Cl    S    S     H     CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    S    S     H     H      OH            Cl   H     S    S     H     CH.sub.3                  OH            Cl   H     S    S     CH.sub.3           CH.sub.3                  OH            Cl   H     S    S     H     H      OH            Cl   CH.sub.3                                           S    S     H     CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           S    S     H     H      OH            H    H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            H    H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     H     SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            CH.sub.3                                     Cl    SO.sub.2                                                SO.sub.2     H     H      OH            Cl   H     SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   H     SO.sub.2                                                SO.sub.2     H     H      OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OH            Cl   CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OS(O).sub.2 (4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           O    SO.sub.2     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           S    S     H     H      OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     H     CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     CH.sub.3           CH.sub.3                  OC(O)(4-CH.sub.3 Ph)                                CH.sub.3                                     CH.sub.3                                           SO.sub.2                                                SO.sub.2     ______________________________________

                  TABLE 3     ______________________________________      ##STR29##     R.sup.6        R.sup.1a                           R.sup.1b  A    B     ______________________________________     wherein X is CH.sub.2     H              H      H         O    S     H              CH.sub.3                           H         O    S     H              CH.sub.3                           CH.sub.3  O    S     H              CH.sub.3                           Cl        O    S     H              Cl     H         O    S     H              Cl     CH.sub.3  O    S     H              H      H         O    SO.sub.2     H              CH.sub.3                           H         O    SO.sub.2     H              CH.sub.3                           CH.sub.3  O    SO.sub.2     H              CH.sub.3                           Cl        SO.sub.2                                          SO.sub.2     H              Cl     H         O    SO.sub.2     H              Cl     CH.sub.3  O    SO.sub.2     H              H      H         S    S     H              CH.sub.3                           H         S    S     H              CH.sub.3                           CH.sub.3  S    S     H              CH.sub.3                           Cl        S    S     H              Cl     H         S    S     H              Cl     CH.sub.3  S    S     H              H      H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     H              CH.sub.3                           Cl        SO.sub.2                                          SO.sub.2     H              Cl     H         SO.sub.2                                          SO.sub.2     H              Cl     CH.sub.3  SO.sub.2                                          SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  S    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     wherein X is SO.sub.2     H              H      H         O    S     H              CH.sub.3                           H         O    S     H              CH.sub.3                           CH.sub.3  O    S     H              CH.sub.3                           Cl        O    S     H              Cl     H         O    S     H              Cl     CH.sub.3  O    S     H              H      H         O    SO.sub.2     H              CH.sub.3                           H         O    SO.sub.2     H              CH.sub.3                           CH.sub.3  O    SO.sub.2     H              CH.sub.3                           Cl        O    SO.sub.2     H              Cl     H         O    SO.sub.2     H              Cl     CH.sub.3  O    SO.sub.2     H              H      H         S    S     H              CH.sub.3                           H         S    S     H              CH.sub.3                           CH.sub.3  S    S     H              CH.sub.3                           Cl        S    S     H              Cl     H         S    S     H              Cl     CH.sub.3  S    S     H              H      H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     H              CH.sub.3                           Cl        SO.sub.2                                          SO.sub.2     H              Cl     H         SO.sub.2                                          SO.sub.2     H              Cl     CH.sub.3  SO.sub.2                                          SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  S    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     ______________________________________

                  TABLE 4     ______________________________________      ##STR30##     R.sup.6        R.sup.1a                           R.sup.1b  A    B     ______________________________________     wherein X is CH     H              H      H         O    S     H              CH.sub.3                           H         O    S     H              CH.sub.3                           CH.sub.3  O    S     H              CH.sub.3                           Cl        O    S     H              Cl     H         O    S     H              Cl     CH.sub.3  O    S     H              H      H         O    SO.sub.2     H              CH.sub.3                           H         O    SO.sub.2     H              CH.sub.3                           CH.sub.3  O    SO.sub.2     H              CH.sub.3                           Cl        O    SO.sub.2     H              Cl     H         O    SO.sub.2     H              Cl     CH.sub.3  O    SO.sub.2     H              H      H         S    S     H              CH.sub.3                           H         S    S     H              CH.sub.3                           CH.sub.3  S    S     H              CH.sub.3                           Cl        S    S     H              Cl     H         S    S     H              Cl     CH.sub.3  S    S     H              H      H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     H              CH.sub.3                           Cl        SO.sub.2                                          SO.sub.2     H              Cl     H         SO.sub.2                                          SO.sub.2     H              Cl     CH.sub.3  SO.sub.2                                          SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  S    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     wherein X is N     H              H      H         O    S     H              CH.sub.3                           H         O    S     H              CH.sub.3                           CH.sub.3  O    S     H              CH.sub.3                           Cl        O    S     H              Cl     H         O    S     H              Cl     CH.sub.3  O    S     H              H      H         O    SO.sub.2     H              CH.sub.3                           H         O    SO.sub.2     H              CH.sub.3                           CH.sub.3  O    SO.sub.2     H              CH.sub.3                           Cl        O    SO.sub.2     H              Cl     H         O    SO.sub.2     H              Cl     CH.sub.3  O    SO.sub.2     H              H      H         S    S     H              CH.sub.3                           H         S    S     H              CH.sub.3                           CH.sub.3  S    S     H              CH.sub.3                           Cl        S    S     H              Cl     H         S    S     H              Cl     CH.sub.3  S    S     H              H      H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           H         SO.sub.2                                          SO.sub.2     H              CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     H              CH.sub.3                           Cl        SO.sub.2                                          SO.sub.2     H              Cl     H         SO.sub.2                                          SO.sub.2     H              Cl     CH.sub.3  SO.sub.2                                          SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     S(O).sub.2 (4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  S    S     C(O)(4-CH.sub.3 Ph)                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)CH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  S    S     C(O)OCH(CH.sub.3).sub.2                    CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  O    SO.sub.2     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  S    S     C(O)OCH.sub.3  CH.sub.3                           CH.sub.3  SO.sub.2                                          SO.sub.2     ______________________________________

                  TABLE 5     ______________________________________      ##STR31##     X               A      B     ______________________________________     CH.sub.2        O      S     SO.sub.2        O      S     CH.sub.2        O      SO.sub.2     SO.sub.2        O      SO.sub.2     CH.sub.2        S      S     SO.sub.2        S      S     CH.sub.2        SO.sub.2                            SO.sub.2     SO.sub.2        SO.sub.2                            SO.sub.2     ______________________________________

                  TABLE 6     ______________________________________      ##STR32##     X               A      B     ______________________________________     CH              O      S     N               O      S     CH              O      SO.sub.2     N               O      SO.sub.2     CH              S      S     N               S      S     CH              SO.sub.2                            SO.sub.2     N               SO.sub.2                            SO.sub.2     ______________________________________

                  TABLE 7     ______________________________________      ##STR33##     X               A      B     ______________________________________     CH.sub.2        O      S     SO.sub.2        O      S     CH.sub.2        O      SO.sub.2     SO.sub.2        O      SO.sub.2     CH.sub.2        S      S     SO.sub.2        S      S     CH.sub.2        SO.sub.2                            SO.sub.2     SO.sub.2        SO.sub.2                            SO.sub.2     ______________________________________

                  TABLE 8     ______________________________________      ##STR34##     X               A      B     ______________________________________     CH              O      S     N               O      S     CH              O      SO.sub.2     N               O      SO.sub.2     CH              S      S     N               S      S     CH              SO.sub.2                            SO.sub.2     N               SO.sub.2                            SO.sub.2     ______________________________________

Formulation/Utility

Compounds of this invention will generally be used as a formulation or composition with an agriculturally suitable carrier comprising at least one of a liquid diluent, a solid diluent or a surfactant. The formulation or composition ingredients are selected to be consistent with the physical properties of the active ingredient, mode of application and environmental factors such as soil type, moisture and temperature. Useful formulations include liquids such as solutions (including emulsifiable concentrates), suspensions, emulsions (including microemulsions and/or suspoemulsions) and the like which optionally can be thickened into gels. Useful formulations further include solids such as dusts, powders, granules, pellets, tablets, films, and the like which can be water-dispersible ("wettable") or water-soluble. Active ingredient can be (micro)encapsulated and further formed into a suspension or solid formulation; alternatively the entire formulation of active ingredient can be encapsulated (or "overcoated"). Encapsulation can control or delay release of the active ingredient. Sprayable formulations can be extended in suitable media and used at spray volumes from about one to several hundred liters per hectare. High-strength compositions are primarily used as intermediates for further formulation.

The formulations will typically contain effective amounts of active ingredient, diluent and surfactant within the following approximate ranges which add up to 100 percent by weight.

    ______________________________________                   Weight Percent                   Active                   Ingredient                           Diluent   Surfactant     ______________________________________     Water-Dispersible and Water-                     5-90      0-94      1-15     soluble Granules, Tablets and     Powders.     Suspensions, Emulsions,                     5-50      40-95     0-15     Solutions (including     Emulsifiable Concentrates)     Dusts           1-25      70-99     0-5     Granules and Pellets                     0.01-99     5-99.99 0-15     High Strength Compositions                     90-99     0-10      0-2     ______________________________________

Typical solid diluents are described in Watkins, et al., Handbook of Insecticide Dust Diluents and Carriers, 2nd Ed., Dorland Books, Caldwell, N.J. Typical liquid diluents are described in Marsden, Solvents Guide, 2nd Ed., Interscience, New York, 1950. McCutcheon's Detergents and Emulsifiers Annual, Allured Publ. Corp., Ridgewood, N.J., as well as Sisely and Wood, Encyclopedia of Surface Active Agents, Chemical Publ. Co., Inc., New York, 1964, list surfactants and recommended uses. All formulations can contain minor amounts of additives to reduce foam, caking, corrosion, microbiological growth and the like, or thickeners to increase viscosity.

Surfactants include, for example, polyethoxylated alcohols, polyethoxylated alkylphenols, polyethoxylated sorbitan fatty acid esters, dialkyl sulfosuccinates, alkyl sulfates, alkylbenzene sulfonates, organosilicones, N,N-dialkyltaurates, lignin sulfonates, naphthalene sulfonate formaldehyde condensates, polycarboxylates, and polyoxyethylene/polyoxypropylene block copolymers. Solid diluents include, for example, clays such as bentonite, montmorillonite, attapulgite and kaolin, starch, sugar, silica, talc, diatomaceous earth, urea, calcium carbonate, sodium carbonate and bicarbonate, and sodium sulfate. Liquid diluents include, for example, water, N,N-dimethylformamide, dimethyl sulfoxide, N-alkylpyrrolidone, ethylene glycol, polypropylene glycol, paraffins, alkylbenzenes, alkylnaphthalenes, oils of olive, castor, linseed, tung, sesame, corn, peanut, cotton-seed, soybean, rape-seed and coconut, fatty acid esters, ketones such as cyclohexanone, 2-heptanone, isophorone and 4-hydroxy-4-methyl-2-pentanone, and alcohols such as methanol, cyclohexanol, decanol and tetrahydrofurfuryl alcohol.

Solutions, including emulsifiable concentrates, can be prepared by simply mixing the ingredients. Dusts and powders can be prepared by blending and, usually, grinding as in a hammer mill or fluid-energy mill. Suspensions are usually prepared by wet-milling; see, for example, U.S. Pat. No. 3,060,084. Granules and pellets can be prepared by spraying the active material upon preformed granular carriers or by agglomeration techniques. See Browning, "Agglomeration", Chemical Engineering, Dec. 4, 1967, pp 147-48, Perry's Chemical Engineer's Handbook, 4th Ed., McGraw-Hill, New York, 1963, pages 8-57 and following, and WO 91/13546. Pellets can be prepared as described in U.S. Pat. No. 4,172,714. Water-dispersible and water-soluble granules can be prepared as taught in U.S. Pat. No. 4,144,050, U.S. Pat. No. 3,920,442 and DE 3,246,493. Tablets can be prepared as taught in U.S. Pat. No. 5,180,587, U.S. Pat. N o. 5,232,701 and U.S. Pat. No. 5,208,030. Films can be prepared as taught in GB 2,095,558 and U.S. Pat. No. 3,299,566.

For further information regarding the art of formulation, see U.S. Pat. No. 3,235,361, Col. 6, line 16 through Col. 7, line 19 and Examples 10-41; U.S. Pat. No. 3,309,192, Col. 5, line 43 through Col. 7, line 62 and Examples 8, 12, 15, 39, 41, 52, 53, 58, 132, 138-140, 162-164, 166, 167 and 169-182; U.S. Pat. No. 2,891,855, Col. 3, line 66 through Col. 5, line 17 and Examples 1-4; Klingman, Weed Control as a Science, John Wiley and Sons, Inc., New York, 1961, pp 81-96; and Hance et al., Weed Control Handbook, 8th Ed., Blackwell Scientific Publications, Oxford, 1989.

In the following Examples, all percentages are by weight and all formulations are prepared in conventional ways. Compound numbers refer to compounds in Index Table A.

    ______________________________________     Example A     High Strength Concentrate     Compound 2            98.5%     silica aerogel        0.5%     synthetic amorphous fine silica                           1.0%.     Example B     Wettable Powder     Compound 3            65.0%     dodecylphenol polyethylene glycol ether                           2.0%     sodium ligninsulfonate                           4.0%     sodium silicoaluminate                           6.0%     montmorillonite (calcined)                           23.0%.     Example C     Granule     Compound 4            10.0%     attapulgite granules (low volatile matter,                           90.0%.     0.71/0.30 mm; U.S.S. No. 20-50     sieves)     Example D     Extruded Pellet     Compound 5            25.0%     anhydrous sodium sulfate                           10.0%     crude calcium ligninsulfonate                           5.0%     sodium alkylnaphthalenesulfonate                           1.0%     calcium/magnesium bentonite                           59.0%.     ______________________________________

Test results indicate that the compounds of the present invention are highly active preemergent and postemergent herbicides or plant growth regulants. Many of them have utility for broad-spectrum pre- and/or postemergence weed control in areas where complete control of all vegetation is desired such as around fuel storage tanks, industrial storage areas, parking lots, drive-in theaters, air fields, river banks, irrigation and other waterways, around billboards and highway and railroad structures. Some of the compounds are useful for the control of selected grass and broadleaf weeds with tolerance to important agronomic crops which include but are not limited to alfalfa, barley, cotton, wheat, rape, sugar beets, corn (maize), sorghum, soybeans, rice, oats, peanuts, vegetables, tomato, potato, perennial plantation crops including coffee, cocoa, oil palm, rubber, sugarcane, citrus, grapes, fruit trees, nut trees, banana, plantain, pineapple, hops, tea and forests such as eucalyptus and conifers (e.g., loblolly pine), and turf species (e.g., Kentucky bluegrass, St. Augustine grass, Kentucky fescue and Bermuda grass). Those skilled in the art will appreciate that not all compounds are equally effective against all weeds. Alternatively, the subject compounds are useful to modify plant growth.

A herbicidally effective amount of the compounds of this invention is determined by a number of factors. These factors include: formulation selected, method of application, amount and type of vegetation present, growing conditions, etc. In general, a herbicidally effective amount of compounds of this invention is 0.001 to 20 kg/ha with a preferred range of 0.004 to 1.0 kg/ha. One skilled in the art can easily determine the herbicidally effective amount necessary for the desired level of weed control.

Compounds of this invention can be used alone or in combination with other commercial herbicides, insecticides or fungicides. Compounds of this invention can also be used in combination with commercial herbicide safeners such as benoxacor, dichlormid and furilazole to increase safety to certain crops. A mixture of one or more of the following herbicides with a compound of this invention may be particularly useful for weed control: acetochlor, acifluorfen and its sodium salt, aclonifen, acrolein (2-propenal), alachlor, ametryn, amidosulfuron, amitrole, ammonium sulfamate, anilofos, asulam, atrazine, azafenidin, azimsulfuron, benazolin, benazolin-ethyl, benfluralin, benfuresate, bensulfuron-methyl, bensulide, bentazone, bifenox, bispyribac and its sodium salt, bromacil, bromoxynil, bromoxynil octanoate, butachlor, butralin, butroxydim (ICIA0500), butylate, caloxydim (BAS 620H), carfentrazone-ethyl, chlomethoxyfen, chloramben, chlorbromuron, chloridazon, chlorimuron-ethyl, chlornitrofen, chlorotoluron, chlorpropham, chlorsulfuron, chlorthal-dimethyl, cinmethylin, cinosulfuron, clethodim, clomazone, clopyralid, clopyralid-olamine, cyanazine, cycloate, cyclosulfamuron, 2,4-D and its butotyl, butyl, isoctyl and isopropyl esters and its dimethylammonium, diolamine and trolamine salts, daimuron, dalapon, dalapon-sodium, dazomet, 2,4-DB and its dimethylammonium, potassium and sodium salts, desmedipham, desmetryn, dicamba and its diglycolammonium, dimethylammonium, potassium and sodium salts, dichlobenil, dichlorprop, diclofop-methyl, 2- 4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl!-5-methyl-3-pyridinecarboxylic acid (AC 263,222), difenzoquat metilsulfate, diflufenican, dimepiperate, dimethenamid, dimethylarsinic acid and its sodium salt, dinitramine, diphenamid, diquat dibromide, dithiopyr, diuron, DNOC, endothal, EPTC, esprocarb, ethalfluralin, ethametsulfuron-methyl, ethofumesate, ethoxysulfuron, fenoxaprop-ethyl, fenoxaprop-P-ethyl, fenuron, fenuron-TCA, flamprop-methyl, flamprop-M-isopropyl, flamprop-M-methyl, flazasulfuron, fluazifop-butyl, fluazifop-P-butyl, fluchloralin, flumetsulam, flumiclorac-pentyl, flumioxazin, fluometuron, fluoroglycofen-ethyl, flupoxam, flupyrsulfuron-methyl and its sodium salt, fluridone, flurochloridone, fluroxypyr, fluthiacet-methyl, fomesafen, fosamine-ammonium, glufosinate, glufosinate-ammonium, glyphosate, glyphosate-isopropylammonium, glyphosate-sesquisodium, glyphosate-trimesium, halosulfuron-methyl, haloxyfop-etotyl, haloxyfop-methyl, hexazinone, imazamethabenz-methyl, imazamox, imazapyr, imazaquin, imazaquin-ammonium, imazethapyr, imazethapyr-ammonium, imazosulfuron, ioxynil, ioxynil octanoate, ioxynil-sodium, isoproturon, isouron, isoxaben, isoxaflutole, lactofen, lenacil, linuron, maleic hydrazide, MCPA and its dimethylammonium, potassium and sodium salts, MCPA-isoctyl, mecoprop, mecoprop-P, mefenacet, mefluidide, metam-sodium, methabenzthiazuron, methylarsonic acid and its calcium, monoammonium, monosodium and disodium salts, methyl 1- 5- 2-chloro-4-(trifluoromethyl)phenoxy!-2-nitrophenyl!-2-methoxyethylidene!amino!oxy!acetate (AKH-7088), methyl 5- (4,6-dimethyl-2-pyrimidinyl)amino!carbonyl!amino!sulfonyl!-1-(2-pyridinyl)-1H-pyrazole4-carboxylate (NC-330), metobenzuron, metolachlor, metosulam, metoxuron, metribuzin, metsulfuron-methyl, molinate, monolinuron, napropamide, naptalam, neburon, nicosulfuron, norflurazon, oryzalin, oxadiazon, oxasulfuron, oxyfluorfen, paraquat dichloride, pebulate, pendimethalin, pentoxazone (KPP-314), perfluidone, phenmedipham, picloram, picloram-potassium, pretilachlor, primisulfuron-methyl, prometon, prometryn, propachlor, propanil, propaquizafop, propazine, propham, propyzamide, prosulfuron, pyrazolynate, pyrazosulfuron-ethyl, pyridate, pyriminobac-methyl, pyrithiobac, pyrithiobac-sodium, quinclorac, quizalofop-ethyl, quizalofop-P-ethyl, quizalofop-P-tefuryl, rimsulfuron, sethoxydim, siduron, simazine, sulcotrione (ICIA005 1), sulfentrazone, sulfometuron-methyl, TCA, TCA-sodium, tebuthiuron, terbacil, terbuthylazine, terbutryn, thenylchlor, thiafluamide (BAY 11390), thifensulfuron-methyl, thiobencarb, tralkoxydim, tri-allate, triasulfuron, triaziflam, tribenuron-methyl, triclopyr, triclopyr-butotyl, triclopyr-triethylammonium, tridiphane, trifluralin, triflusulfuron-methyl, and vernolate.

In certain instances, combinations with other herbicides having a similar spectrum of control but a different mode of action will be particularly advantageous for preventing the development of resistant weeds.

The following Tests demonstrate the control efficacy of the compounds of this invention against specific weeds. The weed control afforded by the compounds is not limited, however, to these species. See Index Tables A and B for compound descriptions. The abbreviation "dec" indicates that the compound appeared to decompose on melting. The abbreviation "Ex." stands for "Example" and is followed by a number indicating in which example the compound is prepared.

    ______________________________________     INDEX TABLE A                                      mp     Cmpd  Structure                  (°C.)     ______________________________________     1 (Ex. 1)            ##STR35##                 95 (dec)*     2 (Ex. 2)            ##STR36##                 208- 213*     3 (Ex. 3)            ##STR37##                 *     4 (Ex. 4)            ##STR38##                 210- 216*            ##STR39##                 202- 203     6            ##STR40##                 *     7            ##STR41##                 *     8            ##STR42##                 189- 192            ##STR43##     ______________________________________      *See Index Table B for .sup.1 H NMR data.

                  INDEX TABLE B     ______________________________________     Cmpd No.            .sup.1 H NMR Data (CDCl.sub.3 solution unless indicated            otherwise).sup.a     ______________________________________     1      δ 2.06 (m, 2H), 2.30 (s, 3H), 2.34 (s, 3H), 2.30-2.90 (m,            4H),            3.05 (m, 2H), 3.22 (br s, 2H), 3.39 (m, 2H), 6.70 (s, 1H)     2      δ 2.05 (m, 2H), 2.28 (s, 3H), 2.45 (m, 2H), 2.64 (s, 3H),            2.79 (m, 2H), 3.11 (m, 2H), 3.50 (m, 2H), 3.85 (s, 2H),            6.82 (s, 1H)     3      δ 2.05 (m, 2H), 2.44 (m, 2H), 2.59 (s, 3H), 2.84 (s, 3H),            2.75-3.00 (m, 4H), 3.47 (t, 2H), 6.93 (s, 1H), 7.44 (d, 1H),            7.68 (d, 1H)     4      δ 1.46 (t, 3H), 2.44 (s, 3H), 2.70 (s, 3H), 3.11 (m, 2H),            3.53 (m, 2H), 3.86 (s, 2H), 4.07 (m, 2H), 7.20 (s, 1H),            7.35 (s, 1H)     6      δ 1.12 (m, 2H), 1.15 (s, 9H), 1.20 (m, 2H), 2.42 (s, 3H),            2.65 (s, 3H), 3.18 (m, 2H), 3.47 (m, 2H), 3.79 (s, 2H),            7.00 (s, 1H)     7      δ 2.39 (s, 3H), 2.50 (s, 3H), 2.65 (s, 3H), 3.14 (m, 2H),            3.46 (m, 2H), 3.47 (s, 3H), 3.84 (s, 2H), 6.98 (s,     ______________________________________            1H)      .sup.a 1 H NMR data are in ppm downfield from tetramethylsilane. Coupling      are designated by (s)singlet, (d)doublet, (t)triplet, (q)quartet,      (m)multiplet, (dd)doublet of doublets, (dt)doublet of triplets, (br      s)broad singlet.

BIOLOGICAL EXAMPLES OF THE INVENTION

Test A

Seeds of barley (Hordeum vulgare), barnyardgrass (Echinochloa crus-galli), bedstraw (Galium aparine), blackgrass (Alopecurus myosuroides), chickweed (Stellaria media), cocklebur (Xanthium strumarium), corn (Zea mays), cotton (Gossypium hirsutum), crabgrass (Digitaria sanguinalis), downy brome (Bromus tectorum), giant foxtail (Setaria faberii), lambquarters (Chenopodium album), morningglory (Ipomoea hederacea), rape (Brassica napus), rice (Oryza sativa), sorghum (Sorghum bicolor), soybean (Glycine max), sugar beet (Beta vulgaris), velvetleaf (Abutilon theophrasti), wheat (Triticum aestivum), wild buckwheat (Polygonum convolvulus), wild oat (Avena fatua) and purple nutsedge (Cyperus rotundus) tubers were planted and treated preemergence with test chemicals formulated in a non-phytotoxic solvent mixture which included a surfactant.

At the same time, these crop and weed species were also treated with postemergence applications of test chemicals formulated in the same manner. Plants ranged in height from 2 to 18 cm (1- to 4-leaf stage) for postemergence treatments. Treated plants and controls were maintained in a greenhouse for twelve to sixteen days, after which all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table A, are based on a scale of 0 to 10 where 0 is no effect and 10 is complete control. A dash (--) response test result.

                                      TABLE A     __________________________________________________________________________     POSTEMERGENCE             Rate 400 g/ha                    Rate 200 g/ha                           Rate 100 g/ha                                  Rate 50 g/ha             1  3   2 4  8 1  3   2 4  8     __________________________________________________________________________     Barley  1  6   7 1  3 0  5   4 0  1     Barnyardgrass             9  9   9 9  9 8  9   9 9  9     Bedstraw             6  8   8 9  6 5  7   8 7  5     Blackgrass             0  2   3 0  5 0  2   1 0  2     Chickweed             8  9   9 9  8 6  9   8 7  6     Cocklebur             6  7   9 9  6 4  7   9 9  6     Corn    2  3   1 1  4 1  2   0 0  3     Cotton  4  10  9 9  10                           4  9   9 3  9     Crabgrass             9  9   9 8  9 6  9   4 2  8     Downy brome             0  2   7 0  2 0  1   4 0  1     Giant foxtail             4  9   9 8  8 2  7   3 4  6     Lambsquarters             9  9   10                      9  9 9  9   9 9  9     Morningglory             9  9   8 6  8 6  8   9 2  4     Nutsedge             0  6   --                      1  0 0  4   0 -- 0     Rape    8  9   9 7  10                           7  8   6 6  8     Rice    4  9   5 2  9 2  9   2 1  9     Sorghum 7  10  9 8  9 3  8   9 3  7     Soybean 8  8   9 5  9 4  7   8 4  2     Sugar beet             10 10  10                      10 10                           9  9   10                                    10 10     Velvetleaf             9  10  10                      9  10                           9  10  10                                    9  10     Wheat   2  5   7 1  4 0  3   5 0  2     Wild buckwheat             3  6   8 7  6 0  6   8 5  4     Wild oat             2  7   6 2  9 1  5   3 0  4     __________________________________________________________________________     PREEMERGENCE             COMPOUND             Rate 400 g/ha                    Rate 200 g/ha                           Rate 100 g/ha                                  Rate 50 g/ha             1  3   2 4  8 1  3   2 4  8     __________________________________________________________________________     Barley  0  0   0 0  0 0  0   0 0  0     Barnyardgrass             0  1   7 0  0 0  0   0 0  0     Bedstraw             0  0   1 2  0 0  0   0 0  0     Blackgrass             0  0   0 0  0 0  0   0 0  0     Chickweed             0  0   4 6  1 0  0   0 3  0     Cocklebur             0  0   0 0  0 0  0   0 0  0     Corn    0  0   0 0  0 0  0   0 0  0     Cotton  0  2   0 0  0 0  0   0 0  0     Crabgrass             1  4   6 3  8 0  1   0 0  1     Downy brome             0  0   0 0  0 0  0   0 0  0     Giant foxtail             0  0   1 0  1 0  0   0 0  0     Lambsquarters             9  9   10                      10 9 0  9   9 6  4     Morningglory             0  0   2 0  0 0  0   2 0  0     Nutsedge             -- 0   0 0  0 0  0   0 0  0     Rape    0  3   0 5  4 0  0   0 0  2     Rice    0  0   1 0  0 0  0   0 0  0     Sorghum 0  1   0 0  0 0  0   0 0  0     Soybean 0  0   6 0  0 0  0   0 0  0     Sugar beet             4  0   9 7  5 0  0   0 0  4     Velvetleaf             -- 9   10                      8  4 -- --  3 1  0     Wheat   0  0   0 0  0 0  0   0 0  0     Wild buckwheat             0  0   0 0  0 0  0   0 0  0     Wild oat             0  0   0 0  0 0  0   0 0  0     __________________________________________________________________________

Test B

The compounds evaluated in this test were formulated in a non-phytotoxic solvent mixture which included a surfactant and applied to the soil surface before plant seedlings emerged (preemergence application), to water that covered the soil surface (flood application), and to plants that were in the one- to four-leaf stage (postemergence application). A sandy loam soil was used for the preemergence and postemergence tests, while a silt loam soil was used in the flood application. Water depth was approximately 2.5 cm for the flood application and was maintained at this level for the duration of the test.

Plant species in the preemergence and postemergence tests consisted of barnyardgrass (Echinochloa crus-galli), winter barley (Hordeum vulgare), bedstraw (Galium aparine), blackgrass (Alopecurus myosuroides), chickweed (Stellaria media), cocklebur (Xanthium strumarium), corn 1 (Zea mays), cotton (Gossypium hirsutum), crabgrass (Digitaria sanguinalis), downy brome (Bromus tectorum), giant foxtail (Setaria faberi), johnsongrass (Sorghum halpense), lambsquarters (Chenopodium album), morningglory (Ipomoea hederacea), pigweed (Amaranthus retroflexus), rape (Brassica napus), Italian ryegrass (Lolium multiflorum), soybean (Glycine max), speedwell (Veronica persica), sugar beet (Beta vulgaris), velvetleaf (Abutilon theophrasti), wheat (Triticum aestivum), wild buckwheat (Polygonum convolvulus), and wild oat (Avena fatua). All plant species were planted one day before application of the compound for the preemergence portion of this test. Plantings of these species were adjusted to produce plants of appropriate size for the postemergence portion of the test. Additionally two corn varieties were treated with postemergence applications. These inbred lines were designated Corn 2 and Corn 3. Plant species in the flood test consisted of rice (Oryza saliva), umbrella sedge (Cyperus difformis), duck salad (Heteranthera limosa) and barnyardgrass 1 (Echinochloa crus-galli).

All plant species were grown using normal greenhouse practices. Visual evaluations of injury expressed on treated plants, when compared to untreated controls, were recorded approximately fourteen to twenty one days after application of the test compound. Plant response to the test compound is summarized in Table B, recorded on a 0 to 100 scale where 0 is no effect and 100 is complete control. A dash (-) response means no test result.

                                      TABLE B     __________________________________________________________________________               COMPOUND        COMPOUND         COMPOUND     __________________________________________________________________________     Rate 250 g/ha               2  4   Rate 250 g/ha                               2      Rate 125 g/ha                                                2   4     POSTEMERGENCE    PREEMERGENCE    POSTEMERGENCE     Barley (winter)               45 --  Barley (winter)                               0      Barley (winter)                                                20  --     Barnyardgrass               95 --  Barnyardgrass                               0      Barnyardgrass                                                90  --     Barnyardgrass 1               70 15  Bedstraw 20     Barnyardgrass 1                                                30  0     Bedstraw  75 --  Blackgrass                               0      Bedstraw  70  --     Blackgrass               50 --  Chickweed                               80     Blackgrass                                                30  --     Chickweed 100                  --  Cocklebur                               0      Chickweed 95  --     Cocklebur 90 --  Corn 1   0      Cocklebur 90  --     Corn 1    0  --  Cotton   0      Corn 1    0   --     Corn 2    15 --  Crabgrass                               100    Corn 2    0   --     Corn 3    75 --  Downy brome                               0      Corn 3    50  --     Cotton    90 --  Giant foxtail                               0      Cotton    90  --     Crabgrass 95 --  Italn. ryegrass                               0      Crabgrass 95  --     Downy brome               60 --  Johnsongrass                               35     Downy brome                                                40  --     Ducksalad 90 80  Lambsquarter                               100    Ducksalad 80  70     Giant foxtail               90 --  Morningglory                               0      Giant foxtail                                                70  --     Italn. ryegrass               40 --  Rape     0      Italn. ryegrass                                                20  --     Johnsongrass               70 --  Redroot pigweed                               0      Johnsongrass                                                70  --     Lambsquarter               100                  --  Soybean  0      Lambsquarter                                                100 --     Morningglory               95 --  Speedwell                               100    Morningglory                                                90  --     Rape      100                  --  Sugar beet                               100    Rape      95  --     Redroot pigweed               70 --  Velvetleaf                               100    Redroot pigweed                                                60  --     Rice japonica               0  0   Wheat    0      Rice japonica                                                0   0     Soybean   90 --  Wild buckwheat                               0      Soybean   90  --     Speedwell 100                  --  Wild oat 0      Speedwell 100 --     Sugar beet               100                  --                  Sugar beet                                                100 --     Umbrella sedge               70 55                  Umbrella sedge                                                50  50     Velvetleaf               100                  --                  Velvetleaf                                                100 --     Wheat     80 --                  Wheat     50  --     Wild buckwheat               50 --                  Wild buckwheat                                                50  --     Wild oat  80 --                  Wild oat  50  --     __________________________________________________________________________                COMPOUND             COMPOUND     __________________________________________________________________________     Rate 125 g/ha                2          Rate 62 g/ha                                     2        3 4     PREEMERGENCE          POSTEMERGENCE     Barley (winter)                0          Barley (winter)                                     10       0 --     Barnyardgrass                0          Barnyardgrass                                     90       90                                                --     Bedstraw   0          Barnyardgrass 1                                     20       0 0     Blackgrass 0          Bedstraw  70       50                                                --     Chickweed  30         Blackgrass                                     20       0 --     Cocklebur  0          Chickweed 90       90                                                --     Corn 1     0          Cocklebur 80       70                                                --     Cotton     0          Corn 1    0        0 --     Crabgrass  80         Corn 2    0        --                                                --     Downy brome                0          Corn 3    30       --                                                --     Giant foxtail                0          Cotton    70       20                                                --     Italn. ryegrass                0          Crabgrass 95       90                                                --     Johnsongrass                0          Downy brome                                     30       0 --     Lambsquarter                100        Ducksalad 40       0 40     Morningglory                0          Giant foxtail                                     60       70                                                --     Rape       0          Italn. ryegrass                                     10       0 --     Redroot pigweed                0          Johnsongrass                                     60       70                                                --     Soybean    0          Lambsquarter                                     100      90                                                --     Speedwell  100        Morningglory                                     90       70                                                --     Sugar beet 100        Rape      70       80                                                --     Velvetleaf 100        Redroot pigweed                                     60       90                                                --     Wheat      0          Rice japonica                                     0        0 0     Wild buckwheat                0          Soybean   85       80                                                --     Wild oat   0          Speedwell 100      70                                                --                           Sugar beet                                     100      70                                                --                           Umbrella sedge                                     10       0 40                           Velvetleaf                                     100      90                                                --                           Wheat     30       0 --                           Wild buckwheat                                     30       20                                                --                           Wild oat  35       0 --     __________________________________________________________________________                  COMPOUND           COMPOUND     __________________________________________________________________________     Rate 62 g/ha 2  3     Rate 31 g/ha                                     2       3 4     PREEMERGENCE          POSTEMERGENCE     Barley (winter)                  0  0     Barley (winter)                                     0       0 --     Barnyardgrass                  0  0     Barnyardgrass                                     90      90                                               --     Bedstraw     0  0     Barnyardgrass 1                                     10      0 0     Blackgrass   0  0     Bedstraw  70      30                                               --     Chickweed    0  0     Blackgrass                                     20      0 --     Cocklebur    0  0     Chickweed 90      50                                               --     Corn 1       0  0     Cocklebur 70      40                                               --     Cotton       0  0     Corn 1    0       0 --     Crabgrass    70 0     Corn 2    0       10                                               --     Downy brome  0  0     Corn 3    30      40                                               --     Giant foxtail                  0  0     Cotton    50      20                                               --     Italn. ryegrass                  0  0     Crabgrass 90      90                                               --     Johnsongrass 0  30    Downy brome                                     20      0 --     Lambsquarter 100                     60    Ducksalad 0       0 10     Morningglory 0  0     Giant foxtail                                     20      40                                               --     Rape         0  10    Italn. ryegrass                                     0       0 --     Redroot pigweed                  0  0     Johnsongrass                                     30      70                                               --     Soybean      0  0     Lambsquarter                                     90      80                                               --     Speedwell    0  --    Morningglory                                     90      70                                               --     Sugar beet   70 10    Rape      60      60                                               --     Velvetleaf   100                     20    Redroot pigweed                                     35      90                                               --     Wheat        0  0     Rice japonica                                     0       0 0     Wild buckwheat                  0  0     Soybean   80      70                                               --     Wild oat     0  0     Speedwell 95      60                                               --                           Sugar beet                                     90      70                                               --                           Umbrella sedge                                     0       0 20                           Velvetleaf                                     90      90                                               --                           Wheat     10      0 --                           Wild buckwheat                                     30      20                                               --                           Wild oat  30      0 --     __________________________________________________________________________              COMPOUND          COMPOUND         COMPOUND     __________________________________________________________________________     Rate 31 g/ha              2   3   Rate 16 g/ha                                3      Rate 8 g/ha                                                 3     PREEMERGENCE     POSTEMERGENCE    POSTEMERGENCE     Barley (winter)              0   0   Barley (winter)                                0      Barley (winter)                                                 0     Barnyardgrass              0   0   Barnyardgrass                                80     Barnyardgrass                                                 80     Bedstraw 0   0   Barnyardgrass 1                                0      Barnyardgrass 1                                                 0     Blackgrass              0   0   Bedstraw  20     Bedstraw  10     Chickweed              0   0   Blackgrass                                0      Blackgrass                                                 0     Cocklebur              0   0   Chickweed 40     Chickweed 40     Corn 1   0   0   Cocklebur 40     Cocklebur 20     Cotton   0   0   Corn 1    0      Corn 1    0     Crabgrass              50  0   Corn 2    0      Corn 2    0     Downy brome              0   0   Corn 3    25     Corn 3    15     Giant foxtail              0   0   Cotton    --     Cotton    0     Italn. ryegrass              0   0   Crabgrass 70     Crabgrass 60     Johnsongrass              0   0   Downy brome                                0      Downy brome                                                 0     Lambsquarter              80  30  Ducksalad 0      Ducksalad 0     Morningglory              0   0   Giant foxtail                                20     Giant foxtail                                                 10     Rape     0   0   Italn. ryegrass                                0      Italn. ryegrass                                                 0     Redroot pigweed              0   0   Johnsongrass                                30     Johnsongrass                                                 20     Soybean  0   0   Lambsquarter                                70     Lambsquarter                                                 40     Speedwell              0   --  Morningglory                                70     Morningglory                                                 40     Sugar beet              20  0   Rape      30     Rape      20     Velvetleaf              40  0   Redroot pigweed                                90     Redroot pigweed                                                 0     Wheat    0   0   Rice japonica                                0      Rice japonica                                                 0     Wild buckwheat              0   0   Soybean   60     Soybean   40     Wild oat 0   0   Speedwell 40     Speedwell 30                      Sugar beet                                40     Sugar beet                                                 20                      Umbrella sedge                                0      Umbrella sedge                                                 0                      Velvetleaf                                90     Velvetleaf                                                 70                      Wheat     0      Wheat     0                      Wild buckwheat                                --     Wild buckwheat                                                 0                      Wild oat  0      Wild oat  0     __________________________________________________________________________

Test C

Plastic pots were partially filled with silt loam soil. The soil was then saturated with water. Rice (Oryza saliva) seed or seedlings at the 2.0-leaf stage, weed seeds, tubers or plant parts selected from arrowhead (Sagittaria rigida), common water plantain (Alisma plantago-aquatica), ducksalad (Heteranthera limosa), gooseweed (Sphenoclea zeylanica), monochoria (Monochoria vaginalis), river bullrush (Scirpus fluviatikis), redstem (Ammania species), rice flatsedge (Cyperus iria), smallflower flatsedge (Cyperus difformis), tighthead sprangletop (Leptochloa fasicularis) and water-clover (Marsilea quadrifolia) were planted into this soil. The various rice seed types and methods are designated as: Rice indica 1 (2 leaf direct seeded indica type rice), Rice indica 3 (2 leaf transplanted indica type rice), Rice japonica 1 (2 leaf direct seeded japonica type rice) and Rice japonica 2 (2 leaf transplanted japonica type rice). Plantings and waterings of these crops and weed species were adjusted to produce plants of appropriate size for the test. At the 2-leaf stage, water levels were raised to 3 cm above the soil surface and maintained at this level throughout the test. Chemical treatments were formulated in a non-phytotoxic solvent mixture which included a surfactant and applied directly to the paddy water by pipette, or to the plant foliage by an air pressure-assisted, calibrated belt-conveyer spray system.

Treated plants and controls were maintained in a greenhouse for approximately 21 days, after which all species were compared to controls and visually evaluated. Plant response ratings, summarized in Table C, are reported on a 0 to 100 scale where 0 is no effect and 100 is complete control. A dash (--) response means no test result.

                                      TABLE C     __________________________________________________________________________            COMPOUMD            Rate 750 g/ha                   Rate 500 g/ha                          Rate 375 g/ha                                 Rate 250 g/ha                                        Rate 175 g/ha                                               Rate 125 g/ha                                                      Rate 75                                                             Rate 64 g/ha            4      4      2      2  4   2      2  4   2      2  4     __________________________________________________________________________     Paddy/silt lo     Arrowhead            --     --     70     50 --  40     30 --  10     -- --     C. waterplantai            --     --     95     95 --  80     70 --  65     -- --     Ducksalad            100    98     90     90 98  85     70 98  --     0  20     Gooseweed            --     --     100    00 --  100    100                                                  --  98     -- --     Monochoria            --     --     95     95 --  90     85 --  60     -- --     R. bulrush            --     --     95     95 --  85     80 --  40     -- --     Redstem            90     85     90     95 20  90     75 0   --     0  0     Rice flatsedge            80     70     95     95 30  95     80 35  --     60 0     Rice indica 1            15     15     10     10 15  10     0  15  --     0  15     Rice indica 3            20     20     0      15 15  10     10 10  --     10 20     Rice japonica 1            --     --     0      10 --  10     10 --  0      -- --     Rice japonica 2            --     --     10     15 --  15     10 --  10     -- --     S. flatsedge            100    98     95     90 85  85     75 80  --     30 30     T. sprangletop            40     15     95     95 20  95     85 0   --     0  10     Water-clover            --     --     80     25 --  25     10 --  0      -- --     __________________________________________________________________________

Test D

Compounds evaluated in this test were formulated in a non-phytotoxic solvent mixture and applied to the surface of the water which was contained in each pot. Individual containers of barnyardgrass (Echinochloa oryzicola), smallflower umbrella sedge (Cyperus difformus), common falsepimpernel (Lindernia procumbens), monochoria (Monochoria vaginalis) and scirpus (Scirpus juncoides) were seeded and allowed to grow until the desired leaf stage of development was reached. A Saita clay loam soil was used for this propagation. Japonica rice (Oryza sativa) was transplanted at 0 and 2 cm depth (designated Rice japonica 1 and Rice japonica 2, respectively) five days before application of the test compound to the water surface. An early and late stage of each weed species was treated, the stage of development being related to the concurrent planting of Scirpus juncoides which was then treated at the 1.5 (early (1)) and the 2.5 (late (2)) leaf stage.

Treated plants and untreated controls were maintained under greenhouse conditions for twenty to thirty days at which time treated plants were compared to untreated controls and visually evaluated. Plant response ratings, summarized in Table D, are based upon a 0 to 100 scale where 0 is no effect and 100 is complete control. A dash response (--) indicated that no test result was recorded.

                  TABLE D     ______________________________________               COMPOUND               COMPOUND     ______________________________________     Rate 125 g/ha               1          Rate 64 g/ha                                      1     Flood Saita soi      Flood Saita soi     Barnyardgrass 1               30         Barnyardgrass 1                                      0     Barnyardgrass 2               0          Barnyardgrass 2                                      0     Falsepimperne11               100        Falsepimperne11                                      100     Falsepimperne12               85         Falsepimperne12                                      85     Monochoria 1               50         Monochoria 1                                      30     Monochoria 2               40         Monochoria 2                                      30     Rice japonica 1               10         Rice japonica 1                                      0     Rice japonica 2               0          Rice japonica 2                                      0     S. flatsedge 1               50         S. flatsedge 1                                      50     S. flatsedge 2               40         S. flatsedge 2                                      30     Scirpus 1 45         Scirpus 1   40     Scirpus 2 40         Scirpus 2   30     ______________________________________               COMPOUND               COMPOUND     ______________________________________     Rate 32 g/ha               1          Rate 16 g/ha                                      1     Flood Saita soi      Flood Saita soi     Barnyardgrass 1               0          Barnyardgrass 1                                      0     Barnyardgrass 2               0          Barnyardgrass 2                                      0     Falsepimperne11               95         Falsepimperne11                                      90     Falsepimperne12               85         Falsepimperne12                                      80     Monochoria 1               20         Monochoria 1                                      0     Monochoria 2               0          Monochoria 2                                      0     Rice japonica 1               10         Rice japonica 1                                      0     Rice japonica 2               0          Rice japonica 2                                      0     S. flatsedge 1               20         S. flatsedge 1                                      0     S. flatsedge 2               20         S. flatsedge 2                                      20     Scirpus 1 30         Scirpus 1   0     Scirpus 2 10         Scirpus 2   0     ______________________________________

Test E

Seeds of barnyardgrass (Echinochloa crus-galli), crabgrass (Digitaria spp.), morningglory (Ipomoea spp.), and velvetleaf (Abutilon theophrasti) were planted into a sandy loam soil and treated preemergence by soil drench with test chemicals formulated in a non-phytotoxic solvent mixture which included a surfactant. At the same time, these crop and weed species were also treated postemergence sprayed to runoff, with test chemicals formulated in the same manner.

Plants ranged in height from two to eighteen cm and were in the one to two leaf stage for the postemergence treatment. Treated plants and untreated controls were maintained in a greenhouse for approximately eleven days, after which all treated plants were compared to untreated controls and visually evaluated for injury. Plant response ratings, summarized in Table E, are based on a 0 to 10 scale where 0 is no effect and 10 is complete control. A dash (--) response means no test results.

                                      TABLE E     __________________________________________________________________________                COMPOUND           COMPOUND     __________________________________________________________________________     Rate 2000 g/ha                6       Rate 1000 g/ha                                   6     PREEMERGENCE       POSTEMERGENCE     Barnyardgrass                8       Barnyardgrass                                   7     Crabgrass  9       Crabgrass  7     Morningglory                2       Morningglory                                   8     Velvetleaf 9       Velvetleaf 9     __________________________________________________________________________ 

What is claimed is:
 1. A compound selected from Formula I,N-oxides and agriculturally suitable salts thereof, ##STR44## wherein Q is ##STR45## Z is selected from the group --CH₂ CH₂ CH₂ --, --OCH₂ CH₂ --, --O--CII═CII--, --OCH₂ O--, --CII₂ OCII₂ --, --CH₂ S(O)_(n) CH₂ --, --CH₂ C(O)CH₂ --, --CH₂ CH₂ --, --OCH₂ -- and --SCH₂ --, each group optionally substituted with one to four R⁵, and the directionality of the Z linkage is defined such that the moiety depicted on the left side of the linkage is bonded to the carbonyl carbon of Q-1;X is S(O)_(n) or CH; A is O or S(O)_(n) ; B is S(O)_(n) ; each R¹ is independently C₁ -C₆ alkyl, C₁ -C₆ haloalkyl, C₁ -C₆ alkoxy, C₁ -C₆ haloalkoxy, S(O)_(n) R¹⁷, SO₂ N(R¹³)₂, halogen, cyano or nitro; each R² is independently C₁ -C₃ alkyl; each R³ is independently C₁ -C₂ alkyl; R⁴ is OR¹⁴, SH, S(O)_(n) R¹⁷, halogen or NR¹⁵ R¹⁶ ; or R⁴ is phenylthio or phenylsulfonyl, each optionally substituted with C₁ -C₃ alkyl, halogen, cyano or nitro; each R⁵ is independently H, C₁ -C₃ alkyl, C₃ -C₆ alkenyl, C₃ -C₆ alkynyl, C₁ -C₃ alkoxy, formyl, C₂ -C₆ alkoxycarbonyl, --CH₂ (C₁ -C₃ alkoxy), --CH(C₁ -C₃ alkoxy)₂, C₁ -C₃ alkylthio, cyano or halogen; or when two R⁵ are attached to the same carbon atom, then said R⁵ pair can be taken together to form --OCH₂ CH₂ O--, --OCH₂ CH₂ CH₂ O--, --SCH₂ CH₂ S-- or --SCH₂ CH₂ CH₂ S--, each group optionally substituted with 1-4 CH₃ ; each R¹³ is independently H or C₁ -C₆ alkyl; R¹⁴ is H, C₁ -C₆ alkyl, C₁ -C₆ haloyalkyl, C₂ -C₆ alkoxyalkyl, formyl, C₂ -C₆ alkylcarbonyl, C₂ -C₆ alkoxycarbonyl, C(O)NR¹⁵ R¹⁶ or SO₂ R¹⁷ ; or R¹⁴ is phenyl, benzyl, benzoyl, --CII₂ C(O)phenyl or phenylsulfonyl, each optionally substituted on the phenyl ring with C₁ -C₃ alkyl, halogen, cyano or nitro; R¹⁵ is H or C₁ -C₆ alkyl; R¹⁶ is C₁ -C₆ alkyl or C₁ -C₆ alkoxy; or R¹⁵ and R¹⁶ can be taken together as CH₂ CH₂, CH₂ CH₂ CH₂, CH₂ CH₂ CH₂ CH₂, --CH₂ CH₂ CH₂ CH₂ CH₂ -- or --CH₂ CH₂ OCH₂ CH₂ --; R¹⁷ is C₁ -C₆ alkyl or C₁ -C₆ haloalkyl; m is 0, 1 or 2; each n is independently 0, 1 or 2; p is 0, 1 or 2; q is 1 or 2; r is 0, 1, 2 or 3; s is 0, 1, 2, 3 or 4; provided that when m is 0 then X is other than N or CH; and wherein the dashed line in Formula I signifies either a single or double bond.
 2. A compound of claim 1 whereinA and B are independently S(O)_(n) ; and R¹ is C₁ -C₃ alkyl, halogen, cyano or nitro.
 3. A compound of claim 2 whereinZ is --CH₂ CH₂ CH₂ ; and R⁴ is OR¹⁴.
 4. The compound of claim 3 which is selected from the group:2- (2,3-dihydro-7,10-dimethyl-6,6-dioxido-5H-1,4-dithiino 2,3-c! 1!benzothiopyran-9-yl)carbonyl!-3-hydroxy-2-cyclohexen-1-one; and 2- (2,3-dihydro-7,10-dimethylnaphtho 1,2-b!-1,4-dithiin-9-yl)carbonyl!-3-hydroxy-2-cyclohexen-1-one.
 5. A herbicidal composition comprising a herbicidally effective amount of a compound of claim 1 and at least one of a surfactant, a solid diluent or a liquid diluent.
 6. A method for controlling the growth of undesired vegetation comprising contacting the vegetation or its environment with a herbicidally effective amount of a compound of claim
 1. 